551979658 has 8 divisors (see below), whose sum is σ = 833243652. Its totient is φ = 274231776.

The previous prime is 551979643. The next prime is 551979671. The reversal of 551979658 is 856979155.

It can be written as a sum of positive squares in 2 ways, for example, as 428614209 + 123365449 = 20703^2 + 11107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 551979599 and 551979608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878635 + ... + 879262.

Almost surely, 2^551979658 is an apocalyptic number.

551979658 is a deficient number, since it is larger than the sum of its proper divisors (281263994).

551979658 is a wasteful number, since it uses less digits than its factorization.

551979658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758056.

The product of its digits is 3402000, while the sum is 55.

The square root of 551979658 is about 23494.2473384444. The cubic root of 551979658 is about 820.3031092401.

The spelling of 551979658 in words is "five hundred fifty-one million, nine hundred seventy-nine thousand, six hundred fifty-eight".