74457641 has 4 divisors (see below), whose sum is σ = 74832000. Its totient is φ = 74083284.

The previous prime is 74457623. The next prime is 74457659. The reversal of 74457641 is 14675447.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (74457623) and next prime (74457659).

It is a cyclic number.

It is not a de Polignac number, because 74457641 - 2⁶ = 74457577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74457595 and 74457604.

It is not an unprimeable number, because it can be changed into a prime (74457611) 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, 186881 + ... + 187278.

It is an arithmetic number, because the mean of its divisors is an integer number (18708000).

Almost surely, 2^74457641 is an apocalyptic number.

It is an amenable number.

74457641 is a deficient number, since it is larger than the sum of its proper divisors (374359).

74457641 is a wasteful number, since it uses less digits than its factorization.

74457641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374358.

The product of its digits is 94080, while the sum is 38.

The square root of 74457641 is about 8628.8841109381. The cubic root of 74457641 is about 420.6973317437.

It can be divided in two parts, 744 and 57641, that added together give a palindrome (58385).

The spelling of 74457641 in words is "seventy-four million, four hundred fifty-seven thousand, six hundred forty-one".