74405818 has 8 divisors (see below), whose sum is σ = 111652020. Its totient is φ = 37188480.

The previous prime is 74405813. The next prime is 74405819. The reversal of 74405818 is 81850447.

It can be written as a sum of positive squares in 2 ways, for example, as 73564929 + 840889 = 8577^2 + 917^2 .

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

It is not an unprimeable number, because it can be changed into a prime (74405813) 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 3 ways as a sum of consecutive naturals, for example, 1188 + ... + 12256.

Almost surely, 2^74405818 is an apocalyptic number.

74405818 is a deficient number, since it is larger than the sum of its proper divisors (37246202).

74405818 is a wasteful number, since it uses less digits than its factorization.

74405818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14432.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 74405818 is about 8625.8807086581. The cubic root of 74405818 is about 420.5997064024.

The spelling of 74405818 in words is "seventy-four million, four hundred five thousand, eight hundred eighteen".