72660279 has 8 divisors (see below), whose sum is σ = 97588080. Its totient is φ = 48086336.

The previous prime is 72660271. The next prime is 72660293. The reversal of 72660279 is 97206627.

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 72660279 - 2³ = 72660271 is a prime.

It is a super-3 number, since 3×72660279³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72660271) 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, 87984 + ... + 88805.

It is an arithmetic number, because the mean of its divisors is an integer number (12198510).

Almost surely, 2^72660279 is an apocalyptic number.

72660279 is a deficient number, since it is larger than the sum of its proper divisors (24927801).

72660279 is a wasteful number, since it uses less digits than its factorization.

72660279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176929.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 72660279 is about 8524.0998938304. The cubic root of 72660279 is about 417.2845965950.

The spelling of 72660279 in words is "seventy-two million, six hundred sixty thousand, two hundred seventy-nine".