72661037 has 8 divisors (see below), whose sum is σ = 76442400. Its totient is φ = 68964784.

The previous prime is 72661003. The next prime is 72661063. The reversal of 72661037 is 73016627.

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

It is not a de Polignac number, because 72661037 - 2⁸ = 72660781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72660994 and 72661012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72661087) 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, 19523 + ... + 22944.

It is an arithmetic number, because the mean of its divisors is an integer number (9555300).

Almost surely, 2^72661037 is an apocalyptic number.

It is an amenable number.

72661037 is a deficient number, since it is larger than the sum of its proper divisors (3781363).

72661037 is a wasteful number, since it uses less digits than its factorization.

72661037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42555.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 72661037 is about 8524.1443558870. The cubic root of 72661037 is about 417.2860476429.

The spelling of 72661037 in words is "seventy-two million, six hundred sixty-one thousand, thirty-seven".