72610666 has 16 divisors (see below), whose sum is σ = 114818400. Its totient is φ = 34343568.

The previous prime is 72610661. The next prime is 72610669. The reversal of 72610666 is 66601627.

It is not an unprimeable number, because it can be changed into a prime (72610661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41281 + ... + 43003.

It is an arithmetic number, because the mean of its divisors is an integer number (7176150).

Almost surely, 2^72610666 is an apocalyptic number.

72610666 is a deficient number, since it is larger than the sum of its proper divisors (42207734).

72610666 is a wasteful number, since it uses less digits than its factorization.

72610666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 72610666 is about 8521.1892362510. The cubic root of 72610666 is about 417.1895999212.

The spelling of 72610666 in words is "seventy-two million, six hundred ten thousand, six hundred sixty-six".