74117641 has 4 divisors (see below), whose sum is σ = 79819012. Its totient is φ = 68416272.

The previous prime is 74117639. The next prime is 74117647. The reversal of 74117641 is 14671147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6943225 + 67174416 = 2635^2 + 8196^2 .

It is a cyclic number.

It is not a de Polignac number, because 74117641 - 2¹ = 74117639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74117647) 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, 2850666 + ... + 2850691.

It is an arithmetic number, because the mean of its divisors is an integer number (19954753).

Almost surely, 2^74117641 is an apocalyptic number.

It is an amenable number.

74117641 is a deficient number, since it is larger than the sum of its proper divisors (5701371).

74117641 is a wasteful number, since it uses less digits than its factorization.

74117641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701370.

The product of its digits is 4704, while the sum is 31.

The square root of 74117641 is about 8609.1602958709. The cubic root of 74117641 is about 420.0560034920.

Adding to 74117641 its reverse (14671147), we get a palindrome (88788788).

The spelling of 74117641 in words is "seventy-four million, one hundred seventeen thousand, six hundred forty-one".