772896091 has 12 divisors (see below), whose sum is σ = 850789296. Its totient is φ = 701605520.

The previous prime is 772896077. The next prime is 772896101. The reversal of 772896091 is 190698277.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-772896091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772896391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85605 + ... + 94201.

It is an arithmetic number, because the mean of its divisors is an integer number (70899108).

Almost surely, 2^772896091 is an apocalyptic number.

772896091 is a deficient number, since it is larger than the sum of its proper divisors (77893205).

772896091 is a wasteful number, since it uses less digits than its factorization.

772896091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362 (or 9351 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 772896091 is about 27801.0088126312. The cubic root of 772896091 is about 917.7133235755.

The spelling of 772896091 in words is "seven hundred seventy-two million, eight hundred ninety-six thousand, ninety-one".