772088621 has 2 divisors, whose sum is σ = 772088622. Its totient is φ = 772088620.

The previous prime is 772088593. The next prime is 772088627. The reversal of 772088621 is 126880277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609398596 + 162690025 = 24686^2 + 12755^2 .

It is a cyclic number.

It is not a de Polignac number, because 772088621 - 2⁶ = 772088557 is a prime.

It is a super-2 number, since 2×772088621² = 1192241677355363282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (772088627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386044310 + 386044311.

It is an arithmetic number, because the mean of its divisors is an integer number (386044311).

Almost surely, 2^772088621 is an apocalyptic number.

It is an amenable number.

772088621 is a deficient number, since it is larger than the sum of its proper divisors (1).

772088621 is an equidigital number, since it uses as much as digits as its factorization.

772088621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 772088621 is about 27786.4827029259. The cubic root of 772088621 is about 917.3936237720.

The spelling of 772088621 in words is "seven hundred seventy-two million, eighty-eight thousand, six hundred twenty-one".