72356667 has 4 divisors (see below), whose sum is σ = 96475560. Its totient is φ = 48237776.

The previous prime is 72356639. The next prime is 72356701. The reversal of 72356667 is 76665327.

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 72356667 - 2¹² = 72352571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72356567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12059442 + ... + 12059447.

It is an arithmetic number, because the mean of its divisors is an integer number (24118890).

Almost surely, 2^72356667 is an apocalyptic number.

72356667 is a deficient number, since it is larger than the sum of its proper divisors (24118893).

72356667 is a wasteful number, since it uses less digits than its factorization.

72356667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24118892.

The product of its digits is 317520, while the sum is 42.

The square root of 72356667 is about 8506.2722152539. The cubic root of 72356667 is about 416.7025753231.

The spelling of 72356667 in words is "seventy-two million, three hundred fifty-six thousand, six hundred sixty-seven".