901656 has 48 divisors (see below), whose sum is σ = 2792400. Its totient is φ = 257472.

The previous prime is 901643. The next prime is 901657. The reversal of 901656 is 656109.

901656 is a `hidden beast` number, since 9 + 0 + 1 + 656 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901657) 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, 391 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (58175).

2⁹⁰¹⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

901656 is an abundant number, since it is smaller than the sum of its proper divisors (1890744).

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

901656 is a wasteful number, since it uses less digits than its factorization.

901656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 901656 is about 949.5556855709. Note that the first 3 decimals coincide. The cubic root of 901656 is about 96.6081188603.

The spelling of 901656 in words is "nine hundred one thousand, six hundred fifty-six".