72416507 has 2 divisors, whose sum is σ = 72416508. Its totient is φ = 72416506.

The previous prime is 72416503. The next prime is 72416557. The reversal of 72416507 is 70561427.

It is a weak prime.

It is an emirp because it is prime and its reverse (70561427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72416507 - 2² = 72416503 is a prime.

It is not a weakly prime, because it can be changed into another prime (72416501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36208253 + 36208254.

It is an arithmetic number, because the mean of its divisors is an integer number (36208254).

Almost surely, 2^72416507 is an apocalyptic number.

72416507 is a deficient number, since it is larger than the sum of its proper divisors (1).

72416507 is an equidigital number, since it uses as much as digits as its factorization.

72416507 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 32.

The square root of 72416507 is about 8509.7888927987. The cubic root of 72416507 is about 416.8174166698.

The spelling of 72416507 in words is "seventy-two million, four hundred sixteen thousand, five hundred seven".