74740147 has 4 divisors (see below), whose sum is σ = 74769480. Its totient is φ = 74710816.

The previous prime is 74740139. The next prime is 74740151. The reversal of 74740147 is 74104747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74740147 - 2³ = 74740139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74740117) 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, 10438 + ... + 16075.

It is an arithmetic number, because the mean of its divisors is an integer number (18692370).

Almost surely, 2^74740147 is an apocalyptic number.

74740147 is a deficient number, since it is larger than the sum of its proper divisors (29333).

74740147 is a wasteful number, since it uses less digits than its factorization.

74740147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29332.

The product of its (nonzero) digits is 21952, while the sum is 34.

The square root of 74740147 is about 8645.2384004144. The cubic root of 74740147 is about 421.2287279511.

The spelling of 74740147 in words is "seventy-four million, seven hundred forty thousand, one hundred forty-seven".