201634656 has 48 divisors (see below), whose sum is σ = 530031600. Its totient is φ = 67117568.

The previous prime is 201634621. The next prime is 201634663. The reversal of 201634656 is 656436102.

It is a tau number, because it is divible by the number of its divisors (48).

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, 117130 + ... + 118838.

It is an arithmetic number, because the mean of its divisors is an integer number (11042325).

Almost surely, 2^201634656 is an apocalyptic number.

It is an amenable number.

201634656 is an abundant number, since it is smaller than the sum of its proper divisors (328396944).

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

201634656 is a wasteful number, since it uses less digits than its factorization.

201634656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951 (or 2943 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 201634656 is about 14199.8118297392. The cubic root of 201634656 is about 586.3924809209.

The spelling of 201634656 in words is "two hundred one million, six hundred thirty-four thousand, six hundred fifty-six".