213655653 has 12 divisors (see below), whose sum is σ = 310340160. Its totient is φ = 141640296.

The previous prime is 213655639. The next prime is 213655657. The reversal of 213655653 is 356556312.

213655653 is a `hidden beast` number, since 21 + 36 + 556 + 53 = 666.

It is not a de Polignac number, because 213655653 - 2⁵ = 213655621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213655657) 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, 64701 + ... + 67922.

It is an arithmetic number, because the mean of its divisors is an integer number (25861680).

Almost surely, 2^213655653 is an apocalyptic number.

It is an amenable number.

213655653 is a deficient number, since it is larger than the sum of its proper divisors (96684507).

213655653 is a wasteful number, since it uses less digits than its factorization.

213655653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132808 (or 132805 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 213655653 is about 14616.9645617686. The cubic root of 213655653 is about 597.8214074652.

The spelling of 213655653 in words is "two hundred thirteen million, six hundred fifty-five thousand, six hundred fifty-three".