74427497 has 8 divisors (see below), whose sum is σ = 78132480. Its totient is φ = 70804080.

The previous prime is 74427481. The next prime is 74427523. The reversal of 74427497 is 79472447.

It is a happy number.

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 74427497 - 2⁴ = 74427481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74427097) 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, 18518 + ... + 22175.

It is an arithmetic number, because the mean of its divisors is an integer number (9766560).

Almost surely, 2^74427497 is an apocalyptic number.

It is an amenable number.

74427497 is a deficient number, since it is larger than the sum of its proper divisors (3704983).

74427497 is a wasteful number, since it uses less digits than its factorization.

74427497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40783.

The product of its digits is 395136, while the sum is 44.

The square root of 74427497 is about 8627.1372424461. The cubic root of 74427497 is about 420.6405513070.

The spelling of 74427497 in words is "seventy-four million, four hundred twenty-seven thousand, four hundred ninety-seven".