72064529 has 4 divisors (see below), whose sum is σ = 72138240. Its totient is φ = 71990820.

The previous prime is 72064477. The next prime is 72064571. The reversal of 72064529 is 92546027.

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 not a de Polignac number, because 72064529 - 2²⁴ = 55287313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72064579) 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, 35369 + ... + 37350.

It is an arithmetic number, because the mean of its divisors is an integer number (18034560).

Almost surely, 2^72064529 is an apocalyptic number.

It is an amenable number.

72064529 is a deficient number, since it is larger than the sum of its proper divisors (73711).

72064529 is an equidigital number, since it uses as much as digits as its factorization.

72064529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73710.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 72064529 is about 8489.0829304466. The cubic root of 72064529 is about 416.1410105823.

The spelling of 72064529 in words is "seventy-two million, sixty-four thousand, five hundred twenty-nine".