555640983 has 24 divisors (see below), whose sum is σ = 816816000. Its totient is φ = 363893904.

The previous prime is 555640961. The next prime is 555641069. The reversal of 555640983 is 389046555.

555640983 is a `hidden beast` number, since 5 + 5 + 564 + 0 + 9 + 83 = 666.

It is not a de Polignac number, because 555640983 - 2⁶ = 555640919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555640913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263668 + ... + 265766.

It is an arithmetic number, because the mean of its divisors is an integer number (34034000).

Almost surely, 2^555640983 is an apocalyptic number.

555640983 is a deficient number, since it is larger than the sum of its proper divisors (261175017).

555640983 is a wasteful number, since it uses less digits than its factorization.

555640983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611 (or 2608 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 555640983 is about 23572.0381596501. The cubic root of 555640983 is about 822.1128257229.

The spelling of 555640983 in words is "five hundred fifty-five million, six hundred forty thousand, nine hundred eighty-three".