772081765 has 16 divisors (see below), whose sum is σ = 1140306048. Its totient is φ = 488702016.

The previous prime is 772081759. The next prime is 772081781. The reversal of 772081765 is 567180277.

It is a cyclic number.

It is not a de Polignac number, because 772081765 - 2³ = 772081757 is a prime.

It is a super-2 number, since 2×772081765² = 1192220503691030450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847987 + ... + 848896.

It is an arithmetic number, because the mean of its divisors is an integer number (71269128).

Almost surely, 2^772081765 is an apocalyptic number.

It is an amenable number.

772081765 is a deficient number, since it is larger than the sum of its proper divisors (368224283).

772081765 is a wasteful number, since it uses less digits than its factorization.

772081765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696908.

The product of its (nonzero) digits is 164640, while the sum is 43.

The square root of 772081765 is about 27786.3593333132. The cubic root of 772081765 is about 917.3909083370.

The spelling of 772081765 in words is "seven hundred seventy-two million, eighty-one thousand, seven hundred sixty-five".