787825617 has 4 divisors (see below), whose sum is σ = 1050434160. Its totient is φ = 525217076.

The previous prime is 787825607. The next prime is 787825639. The reversal of 787825617 is 716528787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 787825617 - 2¹⁴ = 787809233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 787825617.

It is not an unprimeable number, because it can be changed into a prime (787825607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131304267 + ... + 131304272.

It is an arithmetic number, because the mean of its divisors is an integer number (262608540).

Almost surely, 2^787825617 is an apocalyptic number.

It is an amenable number.

787825617 is a deficient number, since it is larger than the sum of its proper divisors (262608543).

787825617 is a wasteful number, since it uses less digits than its factorization.

787825617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262608542.

The product of its digits is 1317120, while the sum is 51.

The square root of 787825617 is about 28068.2314547960. The cubic root of 787825617 is about 923.5846353238.

The spelling of 787825617 in words is "seven hundred eighty-seven million, eight hundred twenty-five thousand, six hundred seventeen".