537665715 has 48 divisors (see below), whose sum is σ = 1015457760. Its totient is φ = 269867520.

The previous prime is 537665693. The next prime is 537665729. The reversal of 537665715 is 517566735.

537665715 is a `hidden beast` number, since 5 + 3 + 76 + 6 + 571 + 5 = 666.

It is not a de Polignac number, because 537665715 - 2⁹ = 537665203 is a prime.

It is a super-2 number, since 2×537665715² = 578168842172922450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32125 + ... + 45905.

It is an arithmetic number, because the mean of its divisors is an integer number (21155370).

Almost surely, 2^537665715 is an apocalyptic number.

537665715 is a deficient number, since it is larger than the sum of its proper divisors (477792045).

537665715 is a wasteful number, since it uses less digits than its factorization.

537665715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13829 (or 13806 counting only the distinct ones).

The product of its digits is 661500, while the sum is 45.

The square root of 537665715 is about 23187.6198649193. The cubic root of 537665715 is about 813.1502152958.

The spelling of 537665715 in words is "five hundred thirty-seven million, six hundred sixty-five thousand, seven hundred fifteen".