72346651 has 4 divisors (see below), whose sum is σ = 77911792. Its totient is φ = 66781512.

The previous prime is 72346639. The next prime is 72346663. The reversal of 72346651 is 15664327.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (72346639) and next prime (72346663).

It is a cyclic number.

It is not a de Polignac number, because 72346651 - 2¹³ = 72338459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72346601) 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, 2782551 + ... + 2782576.

It is an arithmetic number, because the mean of its divisors is an integer number (19477948).

Almost surely, 2^72346651 is an apocalyptic number.

72346651 is a deficient number, since it is larger than the sum of its proper divisors (5565141).

72346651 is a wasteful number, since it uses less digits than its factorization.

72346651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565140.

The product of its digits is 30240, while the sum is 34.

The square root of 72346651 is about 8505.6834528449. The cubic root of 72346651 is about 416.6833470300.

It can be divided in two parts, 723 and 46651, that added together give a palindrome (47374).

The spelling of 72346651 in words is "seventy-two million, three hundred forty-six thousand, six hundred fifty-one".