72245623 has 2 divisors, whose sum is σ = 72245624. Its totient is φ = 72245622.

The previous prime is 72245549. The next prime is 72245629. The reversal of 72245623 is 32654227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72245623 - 2¹⁷ = 72114551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72245629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122811 + 36122812.

It is an arithmetic number, because the mean of its divisors is an integer number (36122812).

Almost surely, 2^72245623 is an apocalyptic number.

72245623 is a deficient number, since it is larger than the sum of its proper divisors (1).

72245623 is an equidigital number, since it uses as much as digits as its factorization.

72245623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 72245623 is about 8499.7425255122. The cubic root of 72245623 is about 416.4892984457.

The spelling of 72245623 in words is "seventy-two million, two hundred forty-five thousand, six hundred twenty-three".