74680591 has 4 divisors (see below), whose sum is σ = 75450592. Its totient is φ = 73910592.

The previous prime is 74680589. The next prime is 74680633. The reversal of 74680591 is 19508647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19508647 = 757 ⋅25771.

It is a cyclic number.

It is not a de Polignac number, because 74680591 - 2¹ = 74680589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74680561) 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 in 3 ways as a sum of consecutive naturals, for example, 384855 + ... + 385048.

It is an arithmetic number, because the mean of its divisors is an integer number (18862648).

Almost surely, 2^74680591 is an apocalyptic number.

74680591 is a deficient number, since it is larger than the sum of its proper divisors (770001).

74680591 is an equidigital number, since it uses as much as digits as its factorization.

74680591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770000.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 74680591 is about 8641.7932745467. The cubic root of 74680591 is about 421.1168141383.

The spelling of 74680591 in words is "seventy-four million, six hundred eighty thousand, five hundred ninety-one".