72406963 has 2 divisors, whose sum is σ = 72406964. Its totient is φ = 72406962.

The previous prime is 72406951. The next prime is 72406973. The reversal of 72406963 is 36960427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72406963 is a prime.

It is not a weakly prime, because it can be changed into another prime (72406903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36203481 + 36203482.

It is an arithmetic number, because the mean of its divisors is an integer number (36203482).

Almost surely, 2^72406963 is an apocalyptic number.

72406963 is a deficient number, since it is larger than the sum of its proper divisors (1).

72406963 is an equidigital number, since it uses as much as digits as its factorization.

72406963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 72406963 is about 8509.2281083539. The cubic root of 72406963 is about 416.7991046378.

The spelling of 72406963 in words is "seventy-two million, four hundred six thousand, nine hundred sixty-three".