978932670 has 64 divisors (see below), whose sum is σ = 2464625664. Its totient is φ = 248371200.

The previous prime is 978932657. The next prime is 978932707. The reversal of 978932670 is 76239879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129495 + ... + 136845.

It is an arithmetic number, because the mean of its divisors is an integer number (38509776).

Almost surely, 2^978932670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978932670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232312832).

978932670 is an abundant number, since it is smaller than the sum of its proper divisors (1485692994).

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

978932670 is a wasteful number, since it uses less digits than its factorization.

978932670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7577.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 978932670 is about 31287.8997377580. The cubic root of 978932670 is about 992.9276565396.

The spelling of 978932670 in words is "nine hundred seventy-eight million, nine hundred thirty-two thousand, six hundred seventy".