72662999 has 2 divisors, whose sum is σ = 72663000. Its totient is φ = 72662998.

The previous prime is 72662983. The next prime is 72663001. The reversal of 72662999 is 99926627.

It is a strong prime.

It is an emirp because it is prime and its reverse (99926627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72662999 - 2⁴ = 72662983 is a prime.

It is a super-2 number, since 2×72662999² = 10559822847348002, which contains 22 as substring.

Together with 72663001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72662939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36331499 + 36331500.

It is an arithmetic number, because the mean of its divisors is an integer number (36331500).

Almost surely, 2^72662999 is an apocalyptic number.

72662999 is a deficient number, since it is larger than the sum of its proper divisors (1).

72662999 is an equidigital number, since it uses as much as digits as its factorization.

72662999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 72662999 is about 8524.2594399748. The cubic root of 72662999 is about 417.2898034745.

The spelling of 72662999 in words is "seventy-two million, six hundred sixty-two thousand, nine hundred ninety-nine".