73665860 has 12 divisors (see below), whose sum is σ = 154698348. Its totient is φ = 29466336.

The previous prime is 73665847. The next prime is 73665863. The reversal of 73665860 is 6856637.

It can be written as a sum of positive squares in 2 ways, for example, as 36990724 + 36675136 = 6082^2 + 6056^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (73665863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841627 + ... + 1841666.

It is an arithmetic number, because the mean of its divisors is an integer number (12891529).

Almost surely, 2^73665860 is an apocalyptic number.

It is an amenable number.

73665860 is an abundant number, since it is smaller than the sum of its proper divisors (81032488).

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

73665860 is a wasteful number, since it uses less digits than its factorization.

73665860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683302 (or 3683300 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 73665860 is about 8582.8818004211. The cubic root of 73665860 is about 419.2007855127.

The spelling of 73665860 in words is "seventy-three million, six hundred sixty-five thousand, eight hundred sixty".