72529613 has 8 divisors (see below), whose sum is σ = 78868608. Its totient is φ = 66299184.

The previous prime is 72529607. The next prime is 72529637. The reversal of 72529613 is 31692527.

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-72529613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72529693) 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, 25745 + ... + 28422.

It is an arithmetic number, because the mean of its divisors is an integer number (9858576).

Almost surely, 2^72529613 is an apocalyptic number.

It is an amenable number.

72529613 is a deficient number, since it is larger than the sum of its proper divisors (6338995).

72529613 is a wasteful number, since it uses less digits than its factorization.

72529613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54283.

The product of its digits is 22680, while the sum is 35.

The square root of 72529613 is about 8516.4319406662. The cubic root of 72529613 is about 417.0343102540.

The spelling of 72529613 in words is "seventy-two million, five hundred twenty-nine thousand, six hundred thirteen".