74100913 has 4 divisors (see below), whose sum is σ = 75116068. Its totient is φ = 73085760.

The previous prime is 74100889. The next prime is 74100947. The reversal of 74100913 is 31900147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31900147 = 31 ⋅1029037.

It can be written as a sum of positive squares in 2 ways, for example, as 41576704 + 32524209 = 6448^2 + 5703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74100913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74100953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507468 + ... + 507613.

It is an arithmetic number, because the mean of its divisors is an integer number (18779017).

Almost surely, 2^74100913 is an apocalyptic number.

74100913 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

74100913 is a deficient number, since it is larger than the sum of its proper divisors (1015155).

74100913 is a wasteful number, since it uses less digits than its factorization.

74100913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015154.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 74100913 is about 8608.1887177269. The cubic root of 74100913 is about 420.0243995651.

The spelling of 74100913 in words is "seventy-four million, one hundred thousand, nine hundred thirteen".