74784401 has 4 divisors (see below), whose sum is σ = 74801904. Its totient is φ = 74766900.

The previous prime is 74784383. The next prime is 74784407. The reversal of 74784401 is 10448747.

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: 10448747 = 151 ⋅69197.

It is a cyclic number.

It is not a de Polignac number, because 74784401 - 2⁶ = 74784337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74784407) 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, 2366 + ... + 12456.

It is an arithmetic number, because the mean of its divisors is an integer number (18700476).

Almost surely, 2^74784401 is an apocalyptic number.

It is an amenable number.

74784401 is a deficient number, since it is larger than the sum of its proper divisors (17503).

74784401 is a wasteful number, since it uses less digits than its factorization.

74784401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17502.

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 74784401 is about 8647.7974652509. The cubic root of 74784401 is about 421.3118487321.

The spelling of 74784401 in words is "seventy-four million, seven hundred eighty-four thousand, four hundred one".