72036577 has 4 divisors (see below), whose sum is σ = 72103936. Its totient is φ = 71969220.

The previous prime is 72036563. The next prime is 72036589. The reversal of 72036577 is 77563027.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72036577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72036977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32049 + ... + 34222.

It is an arithmetic number, because the mean of its divisors is an integer number (18025984).

Almost surely, 2^72036577 is an apocalyptic number.

It is an amenable number.

72036577 is a deficient number, since it is larger than the sum of its proper divisors (67359).

72036577 is a wasteful number, since it uses less digits than its factorization.

72036577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67358.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 72036577 is about 8487.4364209695. The cubic root of 72036577 is about 416.0872001158.

The spelling of 72036577 in words is "seventy-two million, thirty-six thousand, five hundred seventy-seven".