72102603 has 8 divisors (see below), whose sum is σ = 98735248. Its totient is φ = 46769184.

The previous prime is 72102577. The next prime is 72102623. The reversal of 72102603 is 30620127.

It is a happy number.

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

It is not a de Polignac number, because 72102603 - 2⁸ = 72102347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72102603.

It is not an unprimeable number, because it can be changed into a prime (72102623) 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, 324676 + ... + 324897.

It is an arithmetic number, because the mean of its divisors is an integer number (12341906).

Almost surely, 2^72102603 is an apocalyptic number.

72102603 is a deficient number, since it is larger than the sum of its proper divisors (26632645).

72102603 is a wasteful number, since it uses less digits than its factorization.

72102603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649613.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 72102603 is about 8491.3251615987. The cubic root of 72102603 is about 416.2142845566.

The spelling of 72102603 in words is "seventy-two million, one hundred two thousand, six hundred three".