72654719 has 4 divisors (see below), whose sum is σ = 76928544. Its totient is φ = 68380896.

The previous prime is 72654709. The next prime is 72654763. The reversal of 72654719 is 91745627.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72654719 is a prime.

It is a super-2 number, since 2×72654719² = 10557416385937922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72654709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136887 + ... + 2136920.

It is an arithmetic number, because the mean of its divisors is an integer number (19232136).

Almost surely, 2^72654719 is an apocalyptic number.

72654719 is a deficient number, since it is larger than the sum of its proper divisors (4273825).

72654719 is a wasteful number, since it uses less digits than its factorization.

72654719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273824.

The product of its digits is 105840, while the sum is 41.

The square root of 72654719 is about 8523.7737534498. The cubic root of 72654719 is about 417.2739527165.

The spelling of 72654719 in words is "seventy-two million, six hundred fifty-four thousand, seven hundred nineteen".