864045537 has 4 divisors (see below), whose sum is σ = 1152060720. Its totient is φ = 576030356.

The previous prime is 864045503. The next prime is 864045557. The reversal of 864045537 is 735540468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864045537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (864045557) 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, 144007587 + ... + 144007592.

It is an arithmetic number, because the mean of its divisors is an integer number (288015180).

Almost surely, 2^864045537 is an apocalyptic number.

It is an amenable number.

864045537 is a deficient number, since it is larger than the sum of its proper divisors (288015183).

864045537 is a wasteful number, since it uses less digits than its factorization.

864045537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288015182.

The product of its (nonzero) digits is 403200, while the sum is 42.

The square root of 864045537 is about 29394.6515032922. The cubic root of 864045537 is about 952.4573636374.

The spelling of 864045537 in words is "eight hundred sixty-four million, forty-five thousand, five hundred thirty-seven".