772091797 has 4 divisors (see below), whose sum is σ = 796998016. Its totient is φ = 747185580.

The previous prime is 772091779. The next prime is 772091849. The reversal of 772091797 is 797190277.

772091797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-772091797 is a prime.

It is a super-2 number, since 2×772091797² = 1192251485989378418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 772091797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772091497) 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, 12453063 + ... + 12453124.

It is an arithmetic number, because the mean of its divisors is an integer number (199249504).

Almost surely, 2^772091797 is an apocalyptic number.

It is an amenable number.

772091797 is a deficient number, since it is larger than the sum of its proper divisors (24906219).

772091797 is a wasteful number, since it uses less digits than its factorization.

772091797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24906218.

The product of its (nonzero) digits is 388962, while the sum is 49.

The square root of 772091797 is about 27786.5398529576. The cubic root of 772091797 is about 917.3948816751.

The spelling of 772091797 in words is "seven hundred seventy-two million, ninety-one thousand, seven hundred ninety-seven".