74908709 has 4 divisors (see below), whose sum is σ = 76650816. Its totient is φ = 73166604.

The previous prime is 74908693. The next prime is 74908721. The reversal of 74908709 is 90780947.

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.

It is a cyclic number.

It is not a de Polignac number, because 74908709 - 2⁴ = 74908693 is a prime.

It is a super-2 number, since 2×74908709² = 11222629368093362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74908709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74908909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870989 + ... + 871074.

It is an arithmetic number, because the mean of its divisors is an integer number (19162704).

Almost surely, 2^74908709 is an apocalyptic number.

It is an amenable number.

74908709 is a deficient number, since it is larger than the sum of its proper divisors (1742107).

74908709 is a wasteful number, since it uses less digits than its factorization.

74908709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742106.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 74908709 is about 8654.9817446370. The cubic root of 74908709 is about 421.5451569320.

The spelling of 74908709 in words is "seventy-four million, nine hundred eight thousand, seven hundred nine".