74640141 has 6 divisors (see below), whose sum is σ = 107813550. Its totient is φ = 49760088.

The previous prime is 74640127. The next prime is 74640161. The reversal of 74640141 is 14104647.

74640141 is a `hidden beast` number, since 7 + 4 + 640 + 14 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43837641 + 30802500 = 6621^2 + 5550^2 .

It is not a de Polignac number, because 74640141 - 2⁹ = 74639629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74640101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4146666 + ... + 4146683.

It is an arithmetic number, because the mean of its divisors is an integer number (17968925).

Almost surely, 2^74640141 is an apocalyptic number.

It is an amenable number.

74640141 is a deficient number, since it is larger than the sum of its proper divisors (33173409).

74640141 is a wasteful number, since it uses less digits than its factorization.

74640141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8293355 (or 8293352 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 74640141 is about 8639.4525868252. The cubic root of 74640141 is about 421.0407691611.

Adding to 74640141 its reverse (14104647), we get a palindrome (88744788).

The spelling of 74640141 in words is "seventy-four million, six hundred forty thousand, one hundred forty-one".