72666695 has 8 divisors (see below), whose sum is σ = 87384960. Its totient is φ = 58010080.

The previous prime is 72666691. The next prime is 72666707. The reversal of 72666695 is 59666627.

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

It is not a de Polignac number, because 72666695 - 2² = 72666691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72666691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12776 + ... + 17565.

It is an arithmetic number, because the mean of its divisors is an integer number (10923120).

Almost surely, 2^72666695 is an apocalyptic number.

72666695 is a deficient number, since it is larger than the sum of its proper divisors (14718265).

72666695 is a wasteful number, since it uses less digits than its factorization.

72666695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30825.

The product of its digits is 816480, while the sum is 47.

The square root of 72666695 is about 8524.4762302443. The cubic root of 72666695 is about 417.2968784965.

The spelling of 72666695 in words is "seventy-two million, six hundred sixty-six thousand, six hundred ninety-five".