72467579 has 2 divisors, whose sum is σ = 72467580. Its totient is φ = 72467578.

The previous prime is 72467567. The next prime is 72467581. The reversal of 72467579 is 97576427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72467579 is a prime.

It is a super-2 number, since 2×72467579² = 10503100012242482, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 72467581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72467509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36233789 + 36233790.

It is an arithmetic number, because the mean of its divisors is an integer number (36233790).

Almost surely, 2^72467579 is an apocalyptic number.

72467579 is a deficient number, since it is larger than the sum of its proper divisors (1).

72467579 is an equidigital number, since it uses as much as digits as its factorization.

72467579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 47.

The square root of 72467579 is about 8512.7891434007. The cubic root of 72467579 is about 416.9153809671.

The spelling of 72467579 in words is "seventy-two million, four hundred sixty-seven thousand, five hundred seventy-nine".