74181745 has 16 divisors (see below), whose sum is σ = 99180288. Its totient is φ = 52800640.

The previous prime is 74181743. The next prime is 74181769. The reversal of 74181745 is 54718147.

It is not a de Polignac number, because 74181745 - 2¹ = 74181743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74181743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11764 + ... + 16933.

It is an arithmetic number, because the mean of its divisors is an integer number (6198768).

Almost surely, 2^74181745 is an apocalyptic number.

It is an amenable number.

74181745 is a deficient number, since it is larger than the sum of its proper divisors (24998543).

74181745 is a wasteful number, since it uses less digits than its factorization.

74181745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28760.

The product of its digits is 31360, while the sum is 37.

The square root of 74181745 is about 8612.8825023914. The cubic root of 74181745 is about 420.1770700844.

The spelling of 74181745 in words is "seventy-four million, one hundred eighty-one thousand, seven hundred forty-five".