506881988 has 6 divisors (see below), whose sum is σ = 887043486. Its totient is φ = 253440992.

The previous prime is 506881957. The next prime is 506882003. The reversal of 506881988 is 889188605.

It can be written as a sum of positive squares in only one way, i.e., 275294464 + 231587524 = 16592^2 + 15218^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63360245 + ... + 63360252.

It is an arithmetic number, because the mean of its divisors is an integer number (147840581).

Almost surely, 2^506881988 is an apocalyptic number.

It is an amenable number.

506881988 is a deficient number, since it is larger than the sum of its proper divisors (380161498).

506881988 is a wasteful number, since it uses less digits than its factorization.

506881988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126720501 (or 126720499 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 53.

The square root of 506881988 is about 22514.0397974242. The cubic root of 506881988 is about 797.3254371062.

The spelling of 506881988 in words is "five hundred six million, eight hundred eighty-one thousand, nine hundred eighty-eight".