652989 has 8 divisors (see below), whose sum is σ = 874720. Its totient is φ = 433296.

The previous prime is 652969. The next prime is 652991. The reversal of 652989 is 989256.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 652989 - 2⁵ = 652957 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (109340).

2⁶⁵²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

652989 is a deficient number, since it is larger than the sum of its proper divisors (221731).

652989 is a wasteful number, since it uses less digits than its factorization.

652989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its digits is 38880, while the sum is 39.

The square root of 652989 is about 808.0773477830. The cubic root of 652989 is about 86.7564864332.

The spelling of 652989 in words is "six hundred fifty-two thousand, nine hundred eighty-nine".