783604872 has 36 divisors (see below), whose sum is σ = 2122906695. Its totient is φ = 261122448.

The previous prime is 783604807. The next prime is 783604879. The reversal of 783604872 is 278406387.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

783604872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 391802436 + 391802436 = 19794^2 + 19794^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=19794.

It is a super-2 number, since 2×783604872² = 1228073190844272768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (783604879) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 235879 + ... + 239177.

Almost surely, 2^783604872 is an apocalyptic number.

783604872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

783604872 is an abundant number, since it is smaller than the sum of its proper divisors (1339301823).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

783604872 is an equidigital number, since it uses as much as digits as its factorization.

783604872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6610 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 783604872 is about 27992.9432536130. The cubic root of 783604872 is about 921.9323248574.

The spelling of 783604872 in words is "seven hundred eighty-three million, six hundred four thousand, eight hundred seventy-two".