772172068 has 12 divisors (see below), whose sum is σ = 1364681052. Its totient is φ = 382263200.

The previous prime is 772172057. The next prime is 772172069. The reversal of 772172068 is 860271277.

It can be written as a sum of positive squares in 2 ways, for example, as 562733284 + 209438784 = 23722^2 + 14472^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 772172068.

It is not an unprimeable number, because it can be changed into a prime (772172069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955255 + ... + 956062.

It is an arithmetic number, because the mean of its divisors is an integer number (113723421).

Almost surely, 2^772172068 is an apocalyptic number.

It is an amenable number.

772172068 is a deficient number, since it is larger than the sum of its proper divisors (592508984).

772172068 is a wasteful number, since it uses less digits than its factorization.

772172068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911422 (or 1911420 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 772172068 is about 27787.9842377960. The cubic root of 772172068 is about 917.4266730817.

The spelling of 772172068 in words is "seven hundred seventy-two million, one hundred seventy-two thousand, sixty-eight".