652136631 has 4 divisors (see below), whose sum is σ = 869515512. Its totient is φ = 434757752.

The previous prime is 652136629. The next prime is 652136657. The reversal of 652136631 is 136631256.

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 652136631 - 2¹ = 652136629 is a prime.

It is a super-2 number, since 2×652136631² = 850564370984060322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 652136592 and 652136601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652136671) 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, 108689436 + ... + 108689441.

It is an arithmetic number, because the mean of its divisors is an integer number (217378878).

Almost surely, 2^652136631 is an apocalyptic number.

652136631 is a deficient number, since it is larger than the sum of its proper divisors (217378881).

652136631 is a wasteful number, since it uses less digits than its factorization.

652136631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217378880.

The product of its digits is 19440, while the sum is 33.

The square root of 652136631 is about 25536.9659709214. The cubic root of 652136631 is about 867.1872125450.

Adding to 652136631 its reverse (136631256), we get a palindrome (788767887).

The spelling of 652136631 in words is "six hundred fifty-two million, one hundred thirty-six thousand, six hundred thirty-one".