74713993 has 2 divisors, whose sum is σ = 74713994. Its totient is φ = 74713992.

The previous prime is 74713979. The next prime is 74714021. The reversal of 74713993 is 39931747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74701449 + 12544 = 8643^2 + 112^2 .

It is an emirp because it is prime and its reverse (39931747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74713993 - 2²⁵ = 41159561 is a prime.

It is equal to p_4378489 and since 74713993 and 4378489 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (74713393) 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, 37356996 + 37356997.

It is an arithmetic number, because the mean of its divisors is an integer number (37356997).

Almost surely, 2^74713993 is an apocalyptic number.

It is an amenable number.

74713993 is a deficient number, since it is larger than the sum of its proper divisors (1).

74713993 is an equidigital number, since it uses as much as digits as its factorization.

74713993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 74713993 is about 8643.7256434942. The cubic root of 74713993 is about 421.1795883570.

The spelling of 74713993 in words is "seventy-four million, seven hundred thirteen thousand, nine hundred ninety-three".