978667000 has 64 divisors (see below), whose sum is σ = 2303159040. Its totient is φ = 389232000.

The previous prime is 978666989. The next prime is 978667009. The reversal of 978667000 is 766879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978667009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178297 + ... + 183703.

It is an arithmetic number, because the mean of its divisors is an integer number (35986860).

Almost surely, 2^978667000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978667000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1151579520).

978667000 is an abundant number, since it is smaller than the sum of its proper divisors (1324492040).

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

978667000 is a wasteful number, since it uses less digits than its factorization.

978667000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609 (or 5595 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 978667000 is about 31283.6538786632. The cubic root of 978667000 is about 992.8378257251.

The spelling of 978667000 in words is "nine hundred seventy-eight million, six hundred sixty-seven thousand".