72610665 has 8 divisors (see below), whose sum is σ = 116177088. Its totient is φ = 38725680.

The previous prime is 72610661. The next prime is 72610669. The reversal of 72610665 is 56601627.

It is an interprime number because it is at equal distance from previous prime (72610661) and next prime (72610669).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72610665 - 2² = 72610661 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

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, 2420341 + ... + 2420370.

It is an arithmetic number, because the mean of its divisors is an integer number (14522136).

Almost surely, 2^72610665 is an apocalyptic number.

It is an amenable number.

72610665 is a deficient number, since it is larger than the sum of its proper divisors (43566423).

72610665 is a wasteful number, since it uses less digits than its factorization.

72610665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840719.

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

The square root of 72610665 is about 8521.1891775737. The cubic root of 72610665 is about 417.1895980060.

The spelling of 72610665 in words is "seventy-two million, six hundred ten thousand, six hundred sixty-five".