7272657645 has 64 divisors (see below), whose sum is σ = 13389788160. Its totient is φ = 3333657600.

The previous prime is 7272657599. The next prime is 7272657653. The reversal of 7272657645 is 5467562727.

It is a happy number.

It is not a de Polignac number, because 7272657645 - 2¹⁰ = 7272656621 is a prime.

It is a super-3 number, since 3×7272657645³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1712725 + ... + 1716965.

It is an arithmetic number, because the mean of its divisors is an integer number (209215440).

Almost surely, 2^7272657645 is an apocalyptic number.

It is an amenable number.

7272657645 is a deficient number, since it is larger than the sum of its proper divisors (6117130515).

7272657645 is a wasteful number, since it uses less digits than its factorization.

7272657645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826.

The product of its digits is 4939200, while the sum is 51.

The square root of 7272657645 is about 85279.8783125304. The cubic root of 7272657645 is about 1937.4524293280.

The spelling of 7272657645 in words is "seven billion, two hundred seventy-two million, six hundred fifty-seven thousand, six hundred forty-five".