72756061 has 8 divisors (see below), whose sum is σ = 86765184. Its totient is φ = 59650800.

The previous prime is 72756053. The next prime is 72756091. The reversal of 72756061 is 16065727.

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

It is a cyclic number.

It is not a de Polignac number, because 72756061 - 2³ = 72756053 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 (72756001) 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, 225790 + ... + 226111.

It is an arithmetic number, because the mean of its divisors is an integer number (10845648).

Almost surely, 2^72756061 is an apocalyptic number.

It is an amenable number.

72756061 is a deficient number, since it is larger than the sum of its proper divisors (14009123).

72756061 is a wasteful number, since it uses less digits than its factorization.

72756061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451931.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 72756061 is about 8529.7163493284. The cubic root of 72756061 is about 417.4678732734.

The spelling of 72756061 in words is "seventy-two million, seven hundred fifty-six thousand, sixty-one".