72405607 has 2 divisors, whose sum is σ = 72405608. Its totient is φ = 72405606.

The previous prime is 72405581. The next prime is 72405623. The reversal of 72405607 is 70650427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72405607 - 2⁷ = 72405479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72405667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36202803 + 36202804.

It is an arithmetic number, because the mean of its divisors is an integer number (36202804).

Almost surely, 2^72405607 is an apocalyptic number.

72405607 is a deficient number, since it is larger than the sum of its proper divisors (1).

72405607 is an equidigital number, since it uses as much as digits as its factorization.

72405607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 72405607 is about 8509.1484297784. The cubic root of 72405607 is about 416.7965027558.

The spelling of 72405607 in words is "seventy-two million, four hundred five thousand, six hundred seven".