72666629 has 8 divisors (see below), whose sum is σ = 83153280. Its totient is φ = 62206416.

The previous prime is 72666599. The next prime is 72666647. The reversal of 72666629 is 92666627.

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

It is a cyclic number.

It is not a de Polignac number, because 72666629 - 2¹² = 72662533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72666629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72666929) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 314 + ... + 12059.

It is an arithmetic number, because the mean of its divisors is an integer number (10394160).

Almost surely, 2^72666629 is an apocalyptic number.

It is an amenable number.

72666629 is a deficient number, since it is larger than the sum of its proper divisors (10486651).

72666629 is a wasteful number, since it uses less digits than its factorization.

72666629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13219.

The product of its digits is 326592, while the sum is 44.

The square root of 72666629 is about 8524.4723590378. The cubic root of 72666629 is about 417.2967521589.

The spelling of 72666629 in words is "seventy-two million, six hundred sixty-six thousand, six hundred twenty-nine".