72515707 has 8 divisors (see below), whose sum is σ = 79441920. Its totient is φ = 65645160.

The previous prime is 72515699. The next prime is 72515741. The reversal of 72515707 is 70751527.

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

It is a cyclic number.

It is not a de Polignac number, because 72515707 - 2³ = 72515699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72515797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11163 + ... + 16420.

It is an arithmetic number, because the mean of its divisors is an integer number (9930240).

Almost surely, 2^72515707 is an apocalyptic number.

72515707 is a deficient number, since it is larger than the sum of its proper divisors (6926213).

72515707 is a wasteful number, since it uses less digits than its factorization.

72515707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27833.

The product of its (nonzero) digits is 17150, while the sum is 34.

The square root of 72515707 is about 8515.6154798112. The cubic root of 72515707 is about 417.0076560846.

The spelling of 72515707 in words is "seventy-two million, five hundred fifteen thousand, seven hundred seven".