665056126 has 48 divisors (see below), whose sum is σ = 1227260160. Its totient is φ = 268758000.

The previous prime is 665056097. The next prime is 665056127. The reversal of 665056126 is 621650566.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665056127) 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, 466651 + ... + 468073.

It is an arithmetic number, because the mean of its divisors is an integer number (25567920).

Almost surely, 2^665056126 is an apocalyptic number.

665056126 is a deficient number, since it is larger than the sum of its proper divisors (562204034).

665056126 is a wasteful number, since it uses less digits than its factorization.

665056126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 665056126 is about 25788.6821299577. The cubic root of 665056126 is about 872.8764290605.

The spelling of 665056126 in words is "six hundred sixty-five million, fifty-six thousand, one hundred twenty-six".