72873637 has 8 divisors (see below), whose sum is σ = 77085504. Its totient is φ = 68748768.

The previous prime is 72873631. The next prime is 72873659. The reversal of 72873637 is 73637827.

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-72873637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72873593 and 72873602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72873631) 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, 20023 + ... + 23380.

It is an arithmetic number, because the mean of its divisors is an integer number (9635688).

Almost surely, 2^72873637 is an apocalyptic number.

It is an amenable number.

72873637 is a deficient number, since it is larger than the sum of its proper divisors (4211867).

72873637 is a wasteful number, since it uses less digits than its factorization.

72873637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43499.

The product of its digits is 296352, while the sum is 43.

The square root of 72873637 is about 8536.6057071883. The cubic root of 72873637 is about 417.6926324902.

The spelling of 72873637 in words is "seventy-two million, eight hundred seventy-three thousand, six hundred thirty-seven".