72365137 has 8 divisors (see below), whose sum is σ = 78261120. Its totient is φ = 66516240.

The previous prime is 72365113. The next prime is 72365143. The reversal of 72365137 is 73156327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72365137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72365177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8539 + ... + 14752.

It is an arithmetic number, because the mean of its divisors is an integer number (9782640).

Almost surely, 2^72365137 is an apocalyptic number.

It is an amenable number.

72365137 is a deficient number, since it is larger than the sum of its proper divisors (5895983).

72365137 is a wasteful number, since it uses less digits than its factorization.

72365137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23543.

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

The square root of 72365137 is about 8506.7700685983. The cubic root of 72365137 is about 416.7188342860.

The spelling of 72365137 in words is "seventy-two million, three hundred sixty-five thousand, one hundred thirty-seven".