72604236247 has 4 divisors (see below), whose sum is σ = 74946308416. Its totient is φ = 70262164080.

The previous prime is 72604236223. The next prime is 72604236269. The reversal of 72604236247 is 74263240627.

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

It is a cyclic number.

It is not a de Polignac number, because 72604236247 - 2¹⁵ = 72604203479 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 (72604236217) 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, 1171036038 + ... + 1171036099.

It is an arithmetic number, because the mean of its divisors is an integer number (18736577104).

Almost surely, 2^72604236247 is an apocalyptic number.

72604236247 is a deficient number, since it is larger than the sum of its proper divisors (2342072169).

72604236247 is a wasteful number, since it uses less digits than its factorization.

72604236247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342072168.

The product of its (nonzero) digits is 677376, while the sum is 43.

The spelling of 72604236247 in words is "seventy-two billion, six hundred four million, two hundred thirty-six thousand, two hundred forty-seven".