33664220670 has 32 divisors (see below), whose sum is σ = 82118628000. Its totient is φ = 8829959040.

The previous prime is 33664220669. The next prime is 33664220677. The reversal of 33664220670 is 7602246633.

It is a super-2 number, since 2×33664220670² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33664220677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9196045 + ... + 9199704.

It is an arithmetic number, because the mean of its divisors is an integer number (2566207125).

Almost surely, 2^33664220670 is an apocalyptic number.

33664220670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33664220670 is an abundant number, since it is smaller than the sum of its proper divisors (48454407330).

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

33664220670 is a wasteful number, since it uses less digits than its factorization.

33664220670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18395820.

The product of its (nonzero) digits is 217728, while the sum is 39.

The spelling of 33664220670 in words is "thirty-three billion, six hundred sixty-four million, two hundred twenty thousand, six hundred seventy".