72835613 has 4 divisors (see below), whose sum is σ = 72852768. Its totient is φ = 72818460.

The previous prime is 72835603. The next prime is 72835627. The reversal of 72835613 is 31653827.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 72835613 - 2²⁴ = 56058397 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 (72835603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3008 + ... + 12438.

It is an arithmetic number, because the mean of its divisors is an integer number (18213192).

Almost surely, 2^72835613 is an apocalyptic number.

It is an amenable number.

72835613 is a deficient number, since it is larger than the sum of its proper divisors (17155).

72835613 is an equidigital number, since it uses as much as digits as its factorization.

72835613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17154.

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

The square root of 72835613 is about 8534.3783019034. The cubic root of 72835613 is about 417.6199719759.

The spelling of 72835613 in words is "seventy-two million, eight hundred thirty-five thousand, six hundred thirteen".