74045641 has 4 divisors (see below), whose sum is σ = 77942800. Its totient is φ = 70148484.

The previous prime is 74045593. The next prime is 74045651. The reversal of 74045641 is 14654047.

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: 14654047 = 479 ⋅30593.

It is a cyclic number.

It is not a de Polignac number, because 74045641 - 2⁷ = 74045513 is a prime.

It is a super-2 number, since 2×74045641² = 10965513902201762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74045651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1948551 + ... + 1948588.

It is an arithmetic number, because the mean of its divisors is an integer number (19485700).

Almost surely, 2^74045641 is an apocalyptic number.

It is an amenable number.

74045641 is a deficient number, since it is larger than the sum of its proper divisors (3897159).

74045641 is a wasteful number, since it uses less digits than its factorization.

74045641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897158.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 74045641 is about 8604.9776873621. The cubic root of 74045641 is about 419.9199412787.

Adding to 74045641 its reverse (14654047), we get a palindrome (88699688).

The spelling of 74045641 in words is "seventy-four million, forty-five thousand, six hundred forty-one".