32664690 has 24 divisors (see below), whose sum is σ = 84928428. Its totient is φ = 8710560.

The previous prime is 32664689. The next prime is 32664703. The reversal of 32664690 is 9646623.

32664690 is a `hidden beast` number, since 3 + 2 + 6 + 646 + 9 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27342441 + 5322249 = 5229^2 + 2307^2 .

It is a super-2 number, since 2×32664690² = 2133963945592200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181381 + ... + 181560.

Almost surely, 2^32664690 is an apocalyptic number.

32664690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

32664690 is an abundant number, since it is smaller than the sum of its proper divisors (52263738).

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

32664690 is a wasteful number, since it uses less digits than its factorization.

32664690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362954 (or 362951 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 32664690 is about 5715.3031415665. The cubic root of 32664690 is about 319.6633503858.

The spelling of 32664690 in words is "thirty-two million, six hundred sixty-four thousand, six hundred ninety".