72606947 has 4 divisors (see below), whose sum is σ = 82979376. Its totient is φ = 62234520.

The previous prime is 72606901. The next prime is 72606953. The reversal of 72606947 is 74960627.

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 72606947 - 2¹⁴ = 72590563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72606977) 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, 5186204 + ... + 5186217.

It is an arithmetic number, because the mean of its divisors is an integer number (20744844).

Almost surely, 2^72606947 is an apocalyptic number.

72606947 is a deficient number, since it is larger than the sum of its proper divisors (10372429).

72606947 is a wasteful number, since it uses less digits than its factorization.

72606947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10372428.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 72606947 is about 8520.9710127426. The cubic root of 72606947 is about 417.1824772090.

The spelling of 72606947 in words is "seventy-two million, six hundred six thousand, nine hundred forty-seven".