72666079 has 8 divisors (see below), whose sum is σ = 73364720. Its totient is φ = 71971200.

The previous prime is 72666059. The next prime is 72666091. The reversal of 72666079 is 97066627.

It is a happy number.

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 72666079 - 2¹³ = 72657887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72666019) 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, 50137 + ... + 51565.

It is an arithmetic number, because the mean of its divisors is an integer number (9170590).

Almost surely, 2^72666079 is an apocalyptic number.

72666079 is a deficient number, since it is larger than the sum of its proper divisors (698641).

72666079 is a wasteful number, since it uses less digits than its factorization.

72666079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 72666079 is about 8524.4400989156. The cubic root of 72666079 is about 417.2956993428.

The spelling of 72666079 in words is "seventy-two million, six hundred sixty-six thousand, seventy-nine".