72663113 has 4 divisors (see below), whose sum is σ = 72698640. Its totient is φ = 72627588.

The previous prime is 72663109. The next prime is 72663133. The reversal of 72663113 is 31136627.

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 72663113 - 2² = 72663109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72663103) 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, 14495 + ... + 18852.

It is an arithmetic number, because the mean of its divisors is an integer number (18174660).

Almost surely, 2^72663113 is an apocalyptic number.

It is an amenable number.

72663113 is a deficient number, since it is larger than the sum of its proper divisors (35527).

72663113 is a wasteful number, since it uses less digits than its factorization.

72663113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35526.

The product of its digits is 4536, while the sum is 29.

The square root of 72663113 is about 8524.2661267701. The cubic root of 72663113 is about 417.2900217011.

The spelling of 72663113 in words is "seventy-two million, six hundred sixty-three thousand, one hundred thirteen".