79678000 has 40 divisors (see below), whose sum is σ = 192666240. Its totient is φ = 31870400.

The previous prime is 79677977. The next prime is 79678009. The reversal of 79678000 is 87697.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (79678009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17920 + ... + 21919.

It is an arithmetic number, because the mean of its divisors is an integer number (4816656).

Almost surely, 2^79678000 is an apocalyptic number.

It is an amenable number.

79678000 is an abundant number, since it is smaller than the sum of its proper divisors (112988240).

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

79678000 is a wasteful number, since it uses less digits than its factorization.

79678000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39862 (or 39846 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 79678000 is about 8926.2534133868. The cubic root of 79678000 is about 430.3080539991.

The spelling of 79678000 in words is "seventy-nine million, six hundred seventy-eight thousand".