74490691 has 8 divisors (see below), whose sum is σ = 81782064. Its totient is φ = 67285920.

The previous prime is 74490683. The next prime is 74490701. The reversal of 74490691 is 19609447.

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 74490691 - 2³ = 74490683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74490791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19840 + ... + 23293.

It is an arithmetic number, because the mean of its divisors is an integer number (10222758).

Almost surely, 2^74490691 is an apocalyptic number.

74490691 is a deficient number, since it is larger than the sum of its proper divisors (7291373).

74490691 is a wasteful number, since it uses less digits than its factorization.

74490691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43301.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 74490691 is about 8630.7989780784. The cubic root of 74490691 is about 420.7595684280.

The spelling of 74490691 in words is "seventy-four million, four hundred ninety thousand, six hundred ninety-one".