537913685 has 4 divisors (see below), whose sum is σ = 645496428. Its totient is φ = 430330944.

The previous prime is 537913681. The next prime is 537913709. The reversal of 537913685 is 586319735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 186950929 + 350962756 = 13673^2 + 18734^2 .

It is a cyclic number.

It is not a de Polignac number, because 537913685 - 2² = 537913681 is a prime.

It is a super-2 number, since 2×537913685² = 578702265020558450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537913681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53791364 + ... + 53791373.

It is an arithmetic number, because the mean of its divisors is an integer number (161374107).

Almost surely, 2^537913685 is an apocalyptic number.

It is an amenable number.

537913685 is a deficient number, since it is larger than the sum of its proper divisors (107582743).

537913685 is a wasteful number, since it uses less digits than its factorization.

537913685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107582742.

The product of its digits is 680400, while the sum is 47.

The square root of 537913685 is about 23192.9662829057. The cubic root of 537913685 is about 813.2752036563.

The spelling of 537913685 in words is "five hundred thirty-seven million, nine hundred thirteen thousand, six hundred eighty-five".