220670964 has 36 divisors (see below), whose sum is σ = 559890240. Its totient is φ = 73282320.

The previous prime is 220670963. The next prime is 220670981. The reversal of 220670964 is 469076022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220670963) 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, 1554 + ... + 21065.

Almost surely, 2^220670964 is an apocalyptic number.

It is an amenable number.

220670964 is an abundant number, since it is smaller than the sum of its proper divisors (339219276).

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

220670964 is a wasteful number, since it uses less digits than its factorization.

220670964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22900 (or 22895 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 220670964 is about 14854.9979468191. The cubic root of 220670964 is about 604.2941603271.

The spelling of 220670964 in words is "two hundred twenty million, six hundred seventy thousand, nine hundred sixty-four".