74245641 has 4 divisors (see below), whose sum is σ = 98994192. Its totient is φ = 49497092.

The previous prime is 74245621. The next prime is 74245667. The reversal of 74245641 is 14654247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14654247 = 3 ⋅4884749.

It is a cyclic number.

It is not a de Polignac number, because 74245641 - 2⁵ = 74245609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74245621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12374271 + ... + 12374276.

It is an arithmetic number, because the mean of its divisors is an integer number (24748548).

Almost surely, 2^74245641 is an apocalyptic number.

It is an amenable number.

74245641 is a deficient number, since it is larger than the sum of its proper divisors (24748551).

74245641 is a wasteful number, since it uses less digits than its factorization.

74245641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24748550.

The product of its digits is 26880, while the sum is 33.

The square root of 74245641 is about 8616.5910312606. The cubic root of 74245641 is about 420.2976744613.

Adding to 74245641 its reverse (14654247), we get a palindrome (88899888).

The spelling of 74245641 in words is "seventy-four million, two hundred forty-five thousand, six hundred forty-one".