507138668 has 6 divisors (see below), whose sum is σ = 887492676. Its totient is φ = 253569332.

The previous prime is 507138649. The next prime is 507138677. The reversal of 507138668 is 866831705.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63392330 + ... + 63392337.

It is an arithmetic number, because the mean of its divisors is an integer number (147915446).

Almost surely, 2^507138668 is an apocalyptic number.

It is an amenable number.

507138668 is a deficient number, since it is larger than the sum of its proper divisors (380354008).

507138668 is a wasteful number, since it uses less digits than its factorization.

507138668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126784671 (or 126784669 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 507138668 is about 22519.7395189198. The cubic root of 507138668 is about 797.4600002867.

The spelling of 507138668 in words is "five hundred seven million, one hundred thirty-eight thousand, six hundred sixty-eight".