653211996 has 24 divisors (see below), whose sum is σ = 1524662160. Its totient is φ = 217665792.

The previous prime is 653211919. The next prime is 653212019. The reversal of 653211996 is 699112356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39670 + ... + 53666.

It is an arithmetic number, because the mean of its divisors is an integer number (63527590).

Almost surely, 2^653211996 is an apocalyptic number.

It is an amenable number.

653211996 is an abundant number, since it is smaller than the sum of its proper divisors (871450164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

653211996 is a wasteful number, since it uses less digits than its factorization.

653211996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17893 (or 17891 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 653211996 is about 25558.0123640318. The cubic root of 653211996 is about 867.6636110060.

It can be divided in two parts, 6532 and 11996, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 653211996 in words is "six hundred fifty-three million, two hundred eleven thousand, nine hundred ninety-six".