507665890 has 16 divisors (see below), whose sum is σ = 953529408. Its totient is φ = 194237296.

The previous prime is 507665857. The next prime is 507665897. The reversal of 507665890 is 98566705.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 507665890.

It is not an unprimeable number, because it can be changed into a prime (507665897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1103392 + ... + 1103851.

It is an arithmetic number, because the mean of its divisors is an integer number (59595588).

Almost surely, 2^507665890 is an apocalyptic number.

507665890 is a deficient number, since it is larger than the sum of its proper divisors (445863518).

507665890 is a wasteful number, since it uses less digits than its factorization.

507665890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207273.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 507665890 is about 22531.4422529939. The cubic root of 507665890 is about 797.7362513865.

The spelling of 507665890 in words is "five hundred seven million, six hundred sixty-five thousand, eight hundred ninety".