772665066 has 12 divisors (see below), whose sum is σ = 1674107682. Its totient is φ = 257555016.

The previous prime is 772665053. The next prime is 772665071. The reversal of 772665066 is 660566277.

It can be written as a sum of positive squares in only one way, i.e., 772562025 + 103041 = 27795^2 + 321^2 .

It is a super-2 number, since 2×772665066² = 1194022608433568712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21462901 + ... + 21462936.

Almost surely, 2^772665066 is an apocalyptic number.

772665066 is an abundant number, since it is smaller than the sum of its proper divisors (901442616).

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

772665066 is a wasteful number, since it uses less digits than its factorization.

772665066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42925845 (or 42925842 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 772665066 is about 27796.8535269732. The cubic root of 772665066 is about 917.6218771095.

The spelling of 772665066 in words is "seven hundred seventy-two million, six hundred sixty-five thousand, sixty-six".