72337651 has 4 divisors (see below), whose sum is σ = 72471904. Its totient is φ = 72203400.

The previous prime is 72337649. The next prime is 72337673. The reversal of 72337651 is 15673327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15673327 = 23 ⋅681449.

It is a cyclic number.

It is not a de Polignac number, because 72337651 - 2¹ = 72337649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72337631) 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, 66315 + ... + 67396.

It is an arithmetic number, because the mean of its divisors is an integer number (18117976).

Almost surely, 2^72337651 is an apocalyptic number.

72337651 is a deficient number, since it is larger than the sum of its proper divisors (134253).

72337651 is a wasteful number, since it uses less digits than its factorization.

72337651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134252.

The product of its digits is 26460, while the sum is 34.

The square root of 72337651 is about 8505.1543783755. The cubic root of 72337651 is about 416.6660676969. Note that the first 3 decimals are identical.

It can be divided in two parts, 7233 and 7651, that added together give a square (14884 = 122²).

The spelling of 72337651 in words is "seventy-two million, three hundred thirty-seven thousand, six hundred fifty-one".