659001631 has 4 divisors (see below), whose sum is σ = 661759200. Its totient is φ = 656244064.

The previous prime is 659001619. The next prime is 659001653. The reversal of 659001631 is 136100956.

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

It is a cyclic number.

It is not a de Polignac number, because 659001631 - 2²⁹ = 122130719 is a prime.

It is a super-2 number, since 2×659001631² = 868566299321320322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 659001593 and 659001602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659001611) 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, 1378426 + ... + 1378903.

It is an arithmetic number, because the mean of its divisors is an integer number (165439800).

Almost surely, 2^659001631 is an apocalyptic number.

659001631 is a deficient number, since it is larger than the sum of its proper divisors (2757569).

659001631 is a wasteful number, since it uses less digits than its factorization.

659001631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757568.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 659001631 is about 25671.0270733370. The cubic root of 659001631 is about 870.2195381139.

The spelling of 659001631 in words is "six hundred fifty-nine million, one thousand, six hundred thirty-one".