72676291 has 4 divisors (see below), whose sum is σ = 75182400. Its totient is φ = 70170184.

The previous prime is 72676277. The next prime is 72676337. The reversal of 72676291 is 19267627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19267627 = 307 ⋅62761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72676291 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72676271) 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, 1253011 + ... + 1253068.

It is an arithmetic number, because the mean of its divisors is an integer number (18795600).

Almost surely, 2^72676291 is an apocalyptic number.

72676291 is a deficient number, since it is larger than the sum of its proper divisors (2506109).

72676291 is a wasteful number, since it uses less digits than its factorization.

72676291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506108.

The product of its digits is 63504, while the sum is 40.

The square root of 72676291 is about 8525.0390614941. The cubic root of 72676291 is about 417.3152464003.

The spelling of 72676291 in words is "seventy-two million, six hundred seventy-six thousand, two hundred ninety-one".