73912613 has 2 divisors, whose sum is σ = 73912614. Its totient is φ = 73912612.

The previous prime is 73912609. The next prime is 73912673. The reversal of 73912613 is 31621937.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 2982529 = 8422^2 + 1727^2 .

It is a cyclic number.

It is not a de Polignac number, because 73912613 - 2² = 73912609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73912613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73912673) 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, 36956306 + 36956307.

It is an arithmetic number, because the mean of its divisors is an integer number (36956307).

Almost surely, 2^73912613 is an apocalyptic number.

It is an amenable number.

73912613 is a deficient number, since it is larger than the sum of its proper divisors (1).

73912613 is an equidigital number, since it uses as much as digits as its factorization.

73912613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 73912613 is about 8597.2445004199. The cubic root of 73912613 is about 419.6683190118.

The spelling of 73912613 in words is "seventy-three million, nine hundred twelve thousand, six hundred thirteen".