674265978 has 16 divisors (see below), whose sum is σ = 1498368960. Its totient is φ = 224755308.

The previous prime is 674265937. The next prime is 674265989. The reversal of 674265978 is 879562476.

674265978 is a `hidden beast` number, since 6 + 7 + 42 + 6 + 597 + 8 = 666.

674265978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 12486407 = 674265978 / (6 + 7 + 4 + 2 + 6 + 5 + 9 + 7 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6243150 + ... + 6243257.

It is an arithmetic number, because the mean of its divisors is an integer number (93648060).

Almost surely, 2^674265978 is an apocalyptic number.

674265978 is an abundant number, since it is smaller than the sum of its proper divisors (824102982).

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

674265978 is a wasteful number, since it uses less digits than its factorization.

674265978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486418 (or 12486412 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 674265978 is about 25966.6320111022. The cubic root of 674265978 is about 876.8872367517.

The spelling of 674265978 in words is "six hundred seventy-four million, two hundred sixty-five thousand, nine hundred seventy-eight".