72203613 has 8 divisors (see below), whose sum is σ = 98873568. Its totient is φ = 46834704.

The previous prime is 72203603. The next prime is 72203623. The reversal of 72203613 is 31630227.

It is an interprime number because it is at equal distance from previous prime (72203603) and next prime (72203623).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72203613 - 2⁴ = 72203597 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 (72203603) 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, 325131 + ... + 325352.

It is an arithmetic number, because the mean of its divisors is an integer number (12359196).

Almost surely, 2^72203613 is an apocalyptic number.

It is an amenable number.

72203613 is a deficient number, since it is larger than the sum of its proper divisors (26669955).

72203613 is a wasteful number, since it uses less digits than its factorization.

72203613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650523.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 72203613 is about 8497.2709148291. The cubic root of 72203613 is about 416.4085548787.

The spelling of 72203613 in words is "seventy-two million, two hundred three thousand, six hundred thirteen".