74311641 has 32 divisors (see below), whose sum is σ = 122716800. Its totient is φ = 44167680.

The previous prime is 74311571. The next prime is 74311649. The reversal of 74311641 is 14611347.

It is a happy number.

74311641 is a `hidden beast` number, since 7 + 4 + 3 + 11 + 641 = 666.

It is not a de Polignac number, because 74311641 - 2¹⁰ = 74310617 is a prime.

It is a super-2 number, since 2×74311641² = 11044439976225762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (74311649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4461 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (3834900).

Almost surely, 2^74311641 is an apocalyptic number.

It is an amenable number.

74311641 is a deficient number, since it is larger than the sum of its proper divisors (48405159).

74311641 is a wasteful number, since it uses less digits than its factorization.

74311641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566 (or 8560 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 74311641 is about 8620.4200013688. The cubic root of 74311641 is about 420.4221775323.

Adding to 74311641 its reverse (14611347), we get a palindrome (88922988).

The spelling of 74311641 in words is "seventy-four million, three hundred eleven thousand, six hundred forty-one".