770628660 has 48 divisors (see below), whose sum is σ = 2159033856. Its totient is φ = 205379712.

The previous prime is 770628643. The next prime is 770628697. The reversal of 770628660 is 66826077.

It is a super-2 number, since 2×770628660² = 1187737063226791200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150909 + ... + 155931.

It is an arithmetic number, because the mean of its divisors is an integer number (44979872).

Almost surely, 2^770628660 is an apocalyptic number.

It is an amenable number.

770628660 is an abundant number, since it is smaller than the sum of its proper divisors (1388405196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

770628660 is a wasteful number, since it uses less digits than its factorization.

770628660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7592 (or 7590 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 770628660 is about 27760.1992067780. The cubic root of 770628660 is about 916.8150183405.

The spelling of 770628660 in words is "seven hundred seventy million, six hundred twenty-eight thousand, six hundred sixty".