72630403 has 4 divisors (see below), whose sum is σ = 72706480. Its totient is φ = 72554328.

The previous prime is 72630377. The next prime is 72630421. The reversal of 72630403 is 30403627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72630403 - 2²¹ = 70533251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72630473) 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, 36588 + ... + 38521.

It is an arithmetic number, because the mean of its divisors is an integer number (18176620).

Almost surely, 2^72630403 is an apocalyptic number.

72630403 is a deficient number, since it is larger than the sum of its proper divisors (76077).

72630403 is an equidigital number, since it uses as much as digits as its factorization.

72630403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76076.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 72630403 is about 8522.3472705587. The cubic root of 72630403 is about 417.2273965959.

The spelling of 72630403 in words is "seventy-two million, six hundred thirty thousand, four hundred three".