72113565 has 16 divisors (see below), whose sum is σ = 115492608. Its totient is φ = 38423616.

The previous prime is 72113563. The next prime is 72113599. The reversal of 72113565 is 56531127.

It is not a de Polignac number, because 72113565 - 2¹ = 72113563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72113563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22227 + ... + 25263.

It is an arithmetic number, because the mean of its divisors is an integer number (7218288).

Almost surely, 2^72113565 is an apocalyptic number.

It is an amenable number.

72113565 is a deficient number, since it is larger than the sum of its proper divisors (43379043).

72113565 is a wasteful number, since it uses less digits than its factorization.

72113565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628.

The product of its digits is 6300, while the sum is 30.

The square root of 72113565 is about 8491.9706193557. The cubic root of 72113565 is about 416.2353763045.

The spelling of 72113565 in words is "seventy-two million, one hundred thirteen thousand, five hundred sixty-five".