74516909 has 4 divisors (see below), whose sum is σ = 74546400. Its totient is φ = 74487420.

The previous prime is 74516881. The next prime is 74516957. The reversal of 74516909 is 90961547.

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: 90961547 = 1367 ⋅66541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74516909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74516969) 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, 10559 + ... + 16140.

It is an arithmetic number, because the mean of its divisors is an integer number (18636600).

Almost surely, 2^74516909 is an apocalyptic number.

It is an amenable number.

74516909 is a deficient number, since it is larger than the sum of its proper divisors (29491).

74516909 is a wasteful number, since it uses less digits than its factorization.

74516909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29490.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 74516909 is about 8632.3177073136. The cubic root of 74516909 is about 420.8089266330.

The spelling of 74516909 in words is "seventy-four million, five hundred sixteen thousand, nine hundred nine".