74827109 has 4 divisors (see below), whose sum is σ = 85516704. Its totient is φ = 64137516.

The previous prime is 74827097. The next prime is 74827121. The reversal of 74827109 is 90172847.

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: 90172847 = 3623 ⋅24889.

It is an interprime number because it is at equal distance from previous prime (74827097) and next prime (74827121).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74827109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74827139) 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, 5344787 + ... + 5344800.

It is an arithmetic number, because the mean of its divisors is an integer number (21379176).

Almost surely, 2^74827109 is an apocalyptic number.

It is an amenable number.

74827109 is a deficient number, since it is larger than the sum of its proper divisors (10689595).

74827109 is a wasteful number, since it uses less digits than its factorization.

74827109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689594.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 74827109 is about 8650.2664120823. The cubic root of 74827109 is about 421.3920346267.

The spelling of 74827109 in words is "seventy-four million, eight hundred twenty-seven thousand, one hundred nine".