72651066 has 32 divisors (see below), whose sum is σ = 154206720. Its totient is φ = 22768944.

The previous prime is 72651053. The next prime is 72651071. The reversal of 72651066 is 66015627.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3681 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (4818960).

Almost surely, 2^72651066 is an apocalyptic number.

72651066 is an abundant number, since it is smaller than the sum of its proper divisors (81555654).

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

72651066 is a wasteful number, since it uses less digits than its factorization.

72651066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 72651066 is about 8523.5594677341. The cubic root of 72651066 is about 417.2669592396.

The spelling of 72651066 in words is "seventy-two million, six hundred fifty-one thousand, sixty-six".