653223537 has 12 divisors (see below), whose sum is σ = 973982464. Its totient is φ = 421434360.

The previous prime is 653223523. The next prime is 653223539. The reversal of 653223537 is 735322356.

It is not a de Polignac number, because 653223537 - 2¹⁰ = 653222513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653223539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1170373 + ... + 1170930.

Almost surely, 2^653223537 is an apocalyptic number.

It is an amenable number.

653223537 is a deficient number, since it is larger than the sum of its proper divisors (320758927).

653223537 is a wasteful number, since it uses less digits than its factorization.

653223537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341340 (or 2341337 counting only the distinct ones).

The product of its digits is 113400, while the sum is 36.

The square root of 653223537 is about 25558.2381435028. The cubic root of 653223537 is about 867.6687209585.

The spelling of 653223537 in words is "six hundred fifty-three million, two hundred twenty-three thousand, five hundred thirty-seven".