72872707 has 4 divisors (see below), whose sum is σ = 72919936. Its totient is φ = 72825480.

The previous prime is 72872699. The next prime is 72872719. The reversal of 72872707 is 70727827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70727827 = 449 ⋅157523.

It is a cyclic number.

It is not a de Polignac number, because 72872707 - 2³ = 72872699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72872707.

It is not an unprimeable number, because it can be changed into a prime (72872777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21219 + ... + 24412.

It is an arithmetic number, because the mean of its divisors is an integer number (18229984).

Almost surely, 2^72872707 is an apocalyptic number.

72872707 is a deficient number, since it is larger than the sum of its proper divisors (47229).

72872707 is a wasteful number, since it uses less digits than its factorization.

72872707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47228.

The product of its (nonzero) digits is 76832, while the sum is 40.

The square root of 72872707 is about 8536.5512357157. The cubic root of 72872707 is about 417.6908556437.

The spelling of 72872707 in words is "seventy-two million, eight hundred seventy-two thousand, seven hundred seven".