72660129 has 8 divisors (see below), whose sum is σ = 97643520. Its totient is φ = 48058416.

The previous prime is 72660121. The next prime is 72660149. The reversal of 72660129 is 92106627.

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

It is not a de Polignac number, because 72660129 - 2³ = 72660121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72660129.

It is not an unprimeable number, because it can be changed into a prime (72660121) 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, 94974 + ... + 95735.

It is an arithmetic number, because the mean of its divisors is an integer number (12205440).

Almost surely, 2^72660129 is an apocalyptic number.

It is an amenable number.

72660129 is a deficient number, since it is larger than the sum of its proper divisors (24983391).

72660129 is a wasteful number, since it uses less digits than its factorization.

72660129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190839.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 72660129 is about 8524.0910952429. The cubic root of 72660129 is about 417.2843094471.

The spelling of 72660129 in words is "seventy-two million, six hundred sixty thousand, one hundred twenty-nine".