72615007 has 6 divisors (see below), whose sum is σ = 77138048. Its totient is φ = 68343264.

The previous prime is 72614999. The next prime is 72615029. The reversal of 72615007 is 70051627.

It is not a de Polignac number, because 72615007 - 2³ = 72614999 is a prime.

It is a super-2 number, since 2×72615007² = 10545878483220098, 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 (72615077) 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 5 ways as a sum of consecutive naturals, for example, 125343 + ... + 125920.

Almost surely, 2^72615007 is an apocalyptic number.

72615007 is a deficient number, since it is larger than the sum of its proper divisors (4523041).

72615007 is a wasteful number, since it uses less digits than its factorization.

72615007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251297 (or 251280 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 72615007 is about 8521.4439504112. The cubic root of 72615007 is about 417.1979135940.

The spelling of 72615007 in words is "seventy-two million, six hundred fifteen thousand, seven".