73668220 has 12 divisors (see below), whose sum is σ = 154703304. Its totient is φ = 29467280.

The previous prime is 73668181. The next prime is 73668239. The reversal of 73668220 is 2286637.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841686 + ... + 1841725.

It is an arithmetic number, because the mean of its divisors is an integer number (12891942).

Almost surely, 2^73668220 is an apocalyptic number.

It is an amenable number.

73668220 is an abundant number, since it is smaller than the sum of its proper divisors (81035084).

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

73668220 is a wasteful number, since it uses less digits than its factorization.

73668220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683420 (or 3683418 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 73668220 is about 8583.0192822806. The cubic root of 73668220 is about 419.2052620472.

The spelling of 73668220 in words is "seventy-three million, six hundred sixty-eight thousand, two hundred twenty".