72679361 has 4 divisors (see below), whose sum is σ = 73056132. Its totient is φ = 72302592.

The previous prime is 72679357. The next prime is 72679367. The reversal of 72679361 is 16397627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40246336 + 32433025 = 6344^2 + 5695^2 .

It is a cyclic number.

It is not a de Polignac number, because 72679361 - 2² = 72679357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72679367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188096 + ... + 188481.

It is an arithmetic number, because the mean of its divisors is an integer number (18264033).

Almost surely, 2^72679361 is an apocalyptic number.

It is an amenable number.

72679361 is a deficient number, since it is larger than the sum of its proper divisors (376771).

72679361 is a wasteful number, since it uses less digits than its factorization.

72679361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376770.

The product of its digits is 95256, while the sum is 41.

The square root of 72679361 is about 8525.2191174186. The cubic root of 72679361 is about 417.3211224100.

The spelling of 72679361 in words is "seventy-two million, six hundred seventy-nine thousand, three hundred sixty-one".