653864406 has 16 divisors (see below), whose sum is σ = 1408323504. Its totient is φ = 201189024.

The previous prime is 653864383. The next prime is 653864411. The reversal of 653864406 is 604468356.

It is a super-2 number, since 2×653864406² = 855077322867465672, which contains 22 as substring.

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, 4191361 + ... + 4191516.

It is an arithmetic number, because the mean of its divisors is an integer number (88020219).

Almost surely, 2^653864406 is an apocalyptic number.

653864406 is an abundant number, since it is smaller than the sum of its proper divisors (754459098).

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

653864406 is a wasteful number, since it uses less digits than its factorization.

653864406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382895.

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 653864406 is about 25570.7724951750. The cubic root of 653864406 is about 867.9523809946.

The spelling of 653864406 in words is "six hundred fifty-three million, eight hundred sixty-four thousand, four hundred six".