780863081 has 8 divisors (see below), whose sum is σ = 802013184. Its totient is φ = 759813280.

The previous prime is 780863071. The next prime is 780863089. The reversal of 780863081 is 180368087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 780863081 - 2¹⁴ = 780846697 is a prime.

It is a super-2 number, since 2×780863081² = 1219494302537625122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (780863089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9161 + ... + 40566.

It is an arithmetic number, because the mean of its divisors is an integer number (100251648).

Almost surely, 2^780863081 is an apocalyptic number.

It is an amenable number.

780863081 is a deficient number, since it is larger than the sum of its proper divisors (21150103).

780863081 is a wasteful number, since it uses less digits than its factorization.

780863081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50151.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 780863081 is about 27943.9274440799. The cubic root of 780863081 is about 920.8558045625.

The spelling of 780863081 in words is "seven hundred eighty million, eight hundred sixty-three thousand, eighty-one".