74149745 has 8 divisors (see below), whose sum is σ = 89159616. Its totient is φ = 59199856.

The previous prime is 74149741. The next prime is 74149753. The reversal of 74149745 is 54794147.

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

It is a cyclic number.

It is not a de Polignac number, because 74149745 - 2² = 74149741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74149741) 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, 12227 + ... + 17256.

It is an arithmetic number, because the mean of its divisors is an integer number (11144952).

Almost surely, 2^74149745 is an apocalyptic number.

It is an amenable number.

74149745 is a deficient number, since it is larger than the sum of its proper divisors (15009871).

74149745 is a wasteful number, since it uses less digits than its factorization.

74149745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29991.

The product of its digits is 141120, while the sum is 41.

The square root of 74149745 is about 8611.0246196373. The cubic root of 74149745 is about 420.1166437172.

The spelling of 74149745 in words is "seventy-four million, one hundred forty-nine thousand, seven hundred forty-five".