901689 has 12 divisors (see below), whose sum is σ = 1236816. Its totient is φ = 584272.

The previous prime is 901687. The next prime is 901709. The reversal of 901689 is 986109.

It is a happy number.

901689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 901689 - 2¹ = 901687 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (901687) 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, 8374 + ... + 8480.

It is an arithmetic number, because the mean of its divisors is an integer number (103068).

2⁹⁰¹⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

901689 is a deficient number, since it is larger than the sum of its proper divisors (335127).

901689 is a wasteful number, since it uses less digits than its factorization.

901689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 901689 is about 949.5730619600. The cubic root of 901689 is about 96.6092974432.

The spelling of 901689 in words is "nine hundred one thousand, six hundred eighty-nine".