76766978 has 8 divisors (see below), whose sum is σ = 115213968. Its totient is φ = 38362324.

The previous prime is 76766959. The next prime is 76766981. The reversal of 76766978 is 87966767.

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

It is a super-2 number, since 2×76766978² = 11786337822504968, which contains 22 as substring.

Its product of digits (5334336) is a multiple of the sum of its prime divisors (21168).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5576 + ... + 13587.

It is an arithmetic number, because the mean of its divisors is an integer number (14401746).

Almost surely, 2^76766978 is an apocalyptic number.

76766978 is a deficient number, since it is larger than the sum of its proper divisors (38446990).

76766978 is a wasteful number, since it uses less digits than its factorization.

76766978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21168.

The product of its digits is 5334336, while the sum is 56.

The square root of 76766978 is about 8761.6766660269. The cubic root of 76766978 is about 425.0024968711.

The spelling of 76766978 in words is "seventy-six million, seven hundred sixty-six thousand, nine hundred seventy-eight".