550979665 has 8 divisors (see below), whose sum is σ = 661350528. Its totient is φ = 440667120.

The previous prime is 550979657. The next prime is 550979677. The reversal of 550979665 is 566979055.

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

It is not a de Polignac number, because 550979665 - 2³ = 550979657 is a prime.

It is a Duffinian number.

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, 9970 + ... + 34660.

It is an arithmetic number, because the mean of its divisors is an integer number (82668816).

Almost surely, 2^550979665 is an apocalyptic number.

It is an amenable number.

550979665 is a deficient number, since it is larger than the sum of its proper divisors (110370863).

550979665 is a wasteful number, since it uses less digits than its factorization.

550979665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29159.

The product of its (nonzero) digits is 2551500, while the sum is 52.

The square root of 550979665 is about 23472.9560345518. The cubic root of 550979665 is about 819.8074428885.

The spelling of 550979665 in words is "five hundred fifty million, nine hundred seventy-nine thousand, six hundred sixty-five".