772606990 has 64 divisors (see below), whose sum is σ = 1527081984. Its totient is φ = 280240128.

The previous prime is 772606981. The next prime is 772606999. The reversal of 772606990 is 99606277.

It is an interprime number because it is at equal distance from previous prime (772606981) and next prime (772606999).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 772606990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772606999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710227 + ... + 711313.

It is an arithmetic number, because the mean of its divisors is an integer number (23860656).

Almost surely, 2^772606990 is an apocalyptic number.

772606990 is a deficient number, since it is larger than the sum of its proper divisors (754474994).

772606990 is a wasteful number, since it uses less digits than its factorization.

772606990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 772606990 is about 27795.8088567323. The cubic root of 772606990 is about 917.5988860595.

The spelling of 772606990 in words is "seven hundred seventy-two million, six hundred six thousand, nine hundred ninety".