978667922 has 8 divisors (see below), whose sum is σ = 1545265200. Its totient is φ = 463579524.

The previous prime is 978667897. The next prime is 978667927. The reversal of 978667922 is 229766879.

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 (978667927) 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, 12877172 + ... + 12877247.

It is an arithmetic number, because the mean of its divisors is an integer number (193158150).

Almost surely, 2^978667922 is an apocalyptic number.

978667922 is a deficient number, since it is larger than the sum of its proper divisors (566597278).

978667922 is a wasteful number, since it uses less digits than its factorization.

978667922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25754440.

The product of its digits is 4572288, while the sum is 56.

The square root of 978667922 is about 31283.6686147900. The cubic root of 978667922 is about 992.8381375084.

The spelling of 978667922 in words is "nine hundred seventy-eight million, six hundred sixty-seven thousand, nine hundred twenty-two".