72350687 has 4 divisors (see below), whose sum is σ = 73430616. Its totient is φ = 71270760.

The previous prime is 72350669. The next prime is 72350699. The reversal of 72350687 is 78605327.

It is a happy number.

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 72350687 - 2²⁰ = 71302111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72350687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72350627) 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, 539864 + ... + 539997.

It is an arithmetic number, because the mean of its divisors is an integer number (18357654).

Almost surely, 2^72350687 is an apocalyptic number.

72350687 is a deficient number, since it is larger than the sum of its proper divisors (1079929).

72350687 is a wasteful number, since it uses less digits than its factorization.

72350687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079928.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 72350687 is about 8505.9207026635. The cubic root of 72350687 is about 416.6910953855.

It can be divided in two parts, 72350 and 687, that added together give a palindrome (73037).

The spelling of 72350687 in words is "seventy-two million, three hundred fifty thousand, six hundred eighty-seven".