770872978 has 8 divisors (see below), whose sum is σ = 1217167920. Its totient is φ = 365150340.

The previous prime is 770872967. The next prime is 770872979. The reversal of 770872978 is 879278077.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (770872979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10143028 + ... + 10143103.

It is an arithmetic number, because the mean of its divisors is an integer number (152145990).

Almost surely, 2^770872978 is an apocalyptic number.

770872978 is a deficient number, since it is larger than the sum of its proper divisors (446294942).

770872978 is a wasteful number, since it uses less digits than its factorization.

770872978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20286152.

The product of its (nonzero) digits is 2765952, while the sum is 55.

The square root of 770872978 is about 27764.5993668196. The cubic root of 770872978 is about 916.9118962775.

The spelling of 770872978 in words is "seven hundred seventy million, eight hundred seventy-two thousand, nine hundred seventy-eight".