72203623 has 2 divisors, whose sum is σ = 72203624. Its totient is φ = 72203622.

The previous prime is 72203603. The next prime is 72203627. The reversal of 72203623 is 32630227.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72203623 is a prime.

It is a super-2 number, since 2×72203623² = 10426726348652258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72203627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101811 + 36101812.

It is an arithmetic number, because the mean of its divisors is an integer number (36101812).

Almost surely, 2^72203623 is an apocalyptic number.

72203623 is a deficient number, since it is larger than the sum of its proper divisors (1).

72203623 is an equidigital number, since it uses as much as digits as its factorization.

72203623 is an evil number, because the sum of its binary digits is even.

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

The square root of 72203623 is about 8497.2715032533. The cubic root of 72203623 is about 416.4085741025.

The spelling of 72203623 in words is "seventy-two million, two hundred three thousand, six hundred twenty-three".