770816491 has 16 divisors (see below), whose sum is σ = 840823200. Its totient is φ = 703842048.

The previous prime is 770816483. The next prime is 770816531. The reversal of 770816491 is 194618077.

It is a cyclic number.

It is not a de Polignac number, because 770816491 - 2³ = 770816483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770816461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515541 + ... + 517033.

It is an arithmetic number, because the mean of its divisors is an integer number (52551450).

Almost surely, 2^770816491 is an apocalyptic number.

770816491 is a deficient number, since it is larger than the sum of its proper divisors (70006709).

770816491 is a wasteful number, since it uses less digits than its factorization.

770816491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 770816491 is about 27763.5820995779. The cubic root of 770816491 is about 916.8894996489.

The spelling of 770816491 in words is "seven hundred seventy million, eight hundred sixteen thousand, four hundred ninety-one".