72211963 has 2 divisors, whose sum is σ = 72211964. Its totient is φ = 72211962.

The previous prime is 72211957. The next prime is 72211967. The reversal of 72211963 is 36911227.

It is a strong prime.

It is an emirp because it is prime and its reverse (36911227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72211963 - 2¹⁷ = 72080891 is a prime.

It is not a weakly prime, because it can be changed into another prime (72211967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36105981 + 36105982.

It is an arithmetic number, because the mean of its divisors is an integer number (36105982).

Almost surely, 2^72211963 is an apocalyptic number.

72211963 is a deficient number, since it is larger than the sum of its proper divisors (1).

72211963 is an equidigital number, since it uses as much as digits as its factorization.

72211963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 72211963 is about 8497.7622348475. The cubic root of 72211963 is about 416.4246061411.

The spelling of 72211963 in words is "seventy-two million, two hundred eleven thousand, nine hundred sixty-three".