72071963 has 2 divisors, whose sum is σ = 72071964. Its totient is φ = 72071962.

The previous prime is 72071953. The next prime is 72071983. The reversal of 72071963 is 36917027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72071963 - 2²⁴ = 55294747 is a prime.

It is not a weakly prime, because it can be changed into another prime (72071953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36035981 + 36035982.

It is an arithmetic number, because the mean of its divisors is an integer number (36035982).

Almost surely, 2^72071963 is an apocalyptic number.

72071963 is a deficient number, since it is larger than the sum of its proper divisors (1).

72071963 is an equidigital number, since it uses as much as digits as its factorization.

72071963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 72071963 is about 8489.5207756386. The cubic root of 72071963 is about 416.1553194522.

The spelling of 72071963 in words is "seventy-two million, seventy-one thousand, nine hundred sixty-three".