679432698 has 40 divisors (see below), whose sum is σ = 1739925792. Its totient is φ = 194123304.

The previous prime is 679432697. The next prime is 679432751. The reversal of 679432698 is 896234976.

It is a happy number.

It is a super-2 number, since 2×679432698² = 923257582223118408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (679432697) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 298440 + ... + 300707.

Almost surely, 2^679432698 is an apocalyptic number.

679432698 is an abundant number, since it is smaller than the sum of its proper divisors (1060493094).

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

679432698 is a wasteful number, since it uses less digits than its factorization.

679432698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599168 (or 599159 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 679432698 is about 26065.9298318706. The cubic root of 679432698 is about 879.1213242125.

The spelling of 679432698 in words is "six hundred seventy-nine million, four hundred thirty-two thousand, six hundred ninety-eight".