772523985 has 16 divisors (see below), whose sum is σ = 1236438720. Its totient is φ = 411879360.

The previous prime is 772523981. The next prime is 772523989. The reversal of 772523985 is 589325277.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (772523981) and next prime (772523989).

It is not a de Polignac number, because 772523985 - 2² = 772523981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (772523981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55071 + ... + 67659.

It is an arithmetic number, because the mean of its divisors is an integer number (77277420).

Almost surely, 2^772523985 is an apocalyptic number.

It is an amenable number.

772523985 is a deficient number, since it is larger than the sum of its proper divisors (463914735).

772523985 is a wasteful number, since it uses less digits than its factorization.

772523985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16688.

The product of its digits is 1058400, while the sum is 48.

The square root of 772523985 is about 27794.3156958397. The cubic root of 772523985 is about 917.5660241499.

The spelling of 772523985 in words is "seven hundred seventy-two million, five hundred twenty-three thousand, nine hundred eighty-five".