74875649 has 8 divisors (see below), whose sum is σ = 79298880. Its totient is φ = 70549776.

The previous prime is 74875631. The next prime is 74875663. The reversal of 74875649 is 94657847.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74875649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74875597 and 74875606.

It is not an unprimeable number, because it can be changed into a prime (74875699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22754 + ... + 25835.

It is an arithmetic number, because the mean of its divisors is an integer number (9912360).

Almost surely, 2^74875649 is an apocalyptic number.

It is an amenable number.

74875649 is a deficient number, since it is larger than the sum of its proper divisors (4423231).

74875649 is a wasteful number, since it uses less digits than its factorization.

74875649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48679.

The product of its digits is 1693440, while the sum is 50.

The square root of 74875649 is about 8653.0716511537. The cubic root of 74875649 is about 421.4831332867.

The spelling of 74875649 in words is "seventy-four million, eight hundred seventy-five thousand, six hundred forty-nine".