772734636 has 36 divisors (see below), whose sum is σ = 2056108600. Its totient is φ = 244021248.

The previous prime is 772734607. The next prime is 772734637. The reversal of 772734636 is 636437277.

772734636 is a `hidden beast` number, since 7 + 7 + 2 + 7 + 3 + 4 + 636 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 772734591 and 772734600.

It is not an unprimeable number, because it can be changed into a prime (772734637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 564181 + ... + 565548.

Almost surely, 2^772734636 is an apocalyptic number.

772734636 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

772734636 is an abundant number, since it is smaller than the sum of its proper divisors (1283373964).

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

772734636 is a wasteful number, since it uses less digits than its factorization.

772734636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129758 (or 1129753 counting only the distinct ones).

The product of its digits is 889056, while the sum is 45.

The square root of 772734636 is about 27798.1048994351. The cubic root of 772734636 is about 917.6494168723.

The spelling of 772734636 in words is "seven hundred seventy-two million, seven hundred thirty-four thousand, six hundred thirty-six".