72986501 has 4 divisors (see below), whose sum is σ = 83413152. Its totient is φ = 62559852.

The previous prime is 72986489. The next prime is 72986503. The reversal of 72986501 is 10568927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10568927 = 43 ⋅245789.

It is a cyclic number.

It is not a de Polignac number, because 72986501 - 2¹⁰ = 72985477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72986503) 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, 5213315 + ... + 5213328.

It is an arithmetic number, because the mean of its divisors is an integer number (20853288).

Almost surely, 2^72986501 is an apocalyptic number.

It is an amenable number.

72986501 is a deficient number, since it is larger than the sum of its proper divisors (10426651).

72986501 is a wasteful number, since it uses less digits than its factorization.

72986501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10426650.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 72986501 is about 8543.2137395713. The cubic root of 72986501 is about 417.9081569086.

The spelling of 72986501 in words is "seventy-two million, nine hundred eighty-six thousand, five hundred one".