653231642 has 24 divisors (see below), whose sum is σ = 1156846464. Its totient is φ = 275775192.

The previous prime is 653231591. The next prime is 653231669. The reversal of 653231642 is 246132356.

It is a super-2 number, since 2×653231642² = 853423156220032328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 653231599 and 653231608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43178 + ... + 56309.

It is an arithmetic number, because the mean of its divisors is an integer number (48201936).

Almost surely, 2^653231642 is an apocalyptic number.

653231642 is a deficient number, since it is larger than the sum of its proper divisors (503614822).

653231642 is a wasteful number, since it uses less digits than its factorization.

653231642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99570 (or 99563 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 653231642 is about 25558.3967024538. The cubic root of 653231642 is about 867.6723095340.

Adding to 653231642 its reverse (246132356), we get a palindrome (899363998).

The spelling of 653231642 in words is "six hundred fifty-three million, two hundred thirty-one thousand, six hundred forty-two".