770947881 has 16 divisors (see below), whose sum is σ = 1122303168. Its totient is φ = 466856000.

The previous prime is 770947843. The next prime is 770947889. The reversal of 770947881 is 188749077.

It is a cyclic number.

It is not a de Polignac number, because 770947881 - 2¹⁸ = 770685737 is a prime.

It is a super-2 number, since 2×770947881² = 1188721270436780322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (770947889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33955 + ... + 51911.

It is an arithmetic number, because the mean of its divisors is an integer number (70143948).

Almost surely, 2^770947881 is an apocalyptic number.

It is an amenable number.

770947881 is a deficient number, since it is larger than the sum of its proper divisors (351355287).

770947881 is a wasteful number, since it uses less digits than its factorization.

770947881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19272.

The product of its (nonzero) digits is 790272, while the sum is 51.

The square root of 770947881 is about 27765.9482280004. The cubic root of 770947881 is about 916.9415930107.

The spelling of 770947881 in words is "seven hundred seventy million, nine hundred forty-seven thousand, eight hundred eighty-one".