74648597 has 2 divisors, whose sum is σ = 74648598. Its totient is φ = 74648596.

The previous prime is 74648579. The next prime is 74648599. The reversal of 74648597 is 79584647.

Together with previous prime (74648579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 21446161 = 7294^2 + 4631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74648597 is a prime.

Together with 74648599, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74648599) 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, 37324298 + 37324299.

It is an arithmetic number, because the mean of its divisors is an integer number (37324299).

Almost surely, 2^74648597 is an apocalyptic number.

It is an amenable number.

74648597 is a deficient number, since it is larger than the sum of its proper divisors (1).

74648597 is an equidigital number, since it uses as much as digits as its factorization.

74648597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 74648597 is about 8639.9419558235. The cubic root of 74648597 is about 421.0566684983.

It can be divided in two parts, 7464 and 8597, that added together give a palindrome (16061).

The spelling of 74648597 in words is "seventy-four million, six hundred forty-eight thousand, five hundred ninety-seven".