772699968 has 42 divisors (see below), whose sum is σ = 2214806594. Its totient is φ = 257566464.

The previous prime is 772699951. The next prime is 772699969. The reversal of 772699968 is 869996277.

It can be written as a sum of positive squares in only one way, i.e., 772395264 + 304704 = 27792^2 + 552^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772699969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 670171 + ... + 671322.

Almost surely, 2^772699968 is an apocalyptic number.

It is an amenable number.

772699968 is an abundant number, since it is smaller than the sum of its proper divisors (1442106626).

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

772699968 is a wasteful number, since it uses less digits than its factorization.

772699968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341511 (or 1341498 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 772699968 is about 27797.4813247531. The cubic root of 772699968 is about 917.6356935128.

The spelling of 772699968 in words is "seven hundred seventy-two million, six hundred ninety-nine thousand, nine hundred sixty-eight".