652909212 has 72 divisors (see below), whose sum is σ = 1671161856. Its totient is φ = 214920864.

The previous prime is 652909207. The next prime is 652909223. The reversal of 652909212 is 212909256.

It is a happy number.

It is a super-2 number, since 2×652909212² = 852580878228921888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1340433 + ... + 1340919.

Almost surely, 2^652909212 is an apocalyptic number.

It is an amenable number.

652909212 is an abundant number, since it is smaller than the sum of its proper divisors (1018252644).

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

652909212 is a wasteful number, since it uses less digits than its factorization.

652909212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 652909212 is about 25552.0882121207. The cubic root of 652909212 is about 867.5295272971.

The spelling of 652909212 in words is "six hundred fifty-two million, nine hundred nine thousand, two hundred twelve".