74000405 has 8 divisors (see below), whose sum is σ = 94024152. Its totient is φ = 55717888.

The previous prime is 74000387. The next prime is 74000417. The reversal of 74000405 is 50400047.

It can be written as a sum of positive squares in 4 ways, for example, as 34975396 + 39025009 = 5914^2 + 6247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74000405 - 2⁸ = 74000149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435212 + ... + 435381.

It is an arithmetic number, because the mean of its divisors is an integer number (11753019).

Almost surely, 2^74000405 is an apocalyptic number.

It is an amenable number.

74000405 is a deficient number, since it is larger than the sum of its proper divisors (20023747).

74000405 is a wasteful number, since it uses less digits than its factorization.

74000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870615.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 74000405 is about 8602.3488071573. The cubic root of 74000405 is about 419.8344112922.

The spelling of 74000405 in words is "seventy-four million, four hundred five", and thus it is an aban number.