72667459 has 2 divisors, whose sum is σ = 72667460. Its totient is φ = 72667458.

The previous prime is 72667451. The next prime is 72667477. The reversal of 72667459 is 95476627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72667459 - 2³ = 72667451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72667451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36333729 + 36333730.

It is an arithmetic number, because the mean of its divisors is an integer number (36333730).

Almost surely, 2^72667459 is an apocalyptic number.

72667459 is a deficient number, since it is larger than the sum of its proper divisors (1).

72667459 is an equidigital number, since it uses as much as digits as its factorization.

72667459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The square root of 72667459 is about 8524.5210422639. The cubic root of 72667459 is about 417.2983409441.

The spelling of 72667459 in words is "seventy-two million, six hundred sixty-seven thousand, four hundred fifty-nine".