72573667 has 2 divisors, whose sum is σ = 72573668. Its totient is φ = 72573666.

The previous prime is 72573659. The next prime is 72573719. The reversal of 72573667 is 76637527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72573667 - 2³ = 72573659 is a prime.

It is not a weakly prime, because it can be changed into another prime (72573647) 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, 36286833 + 36286834.

It is an arithmetic number, because the mean of its divisors is an integer number (36286834).

Almost surely, 2^72573667 is an apocalyptic number.

72573667 is a deficient number, since it is larger than the sum of its proper divisors (1).

72573667 is an equidigital number, since it uses as much as digits as its factorization.

72573667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 43.

The square root of 72573667 is about 8519.0179598355. The cubic root of 72573667 is about 417.1187277782.

The spelling of 72573667 in words is "seventy-two million, five hundred seventy-three thousand, six hundred sixty-seven".