74245691 has 8 divisors (see below), whose sum is σ = 80569104. Its totient is φ = 68009760.

The previous prime is 74245667. The next prime is 74245709. The reversal of 74245691 is 19654247.

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

It is a de Polignac number, because none of the positive numbers 2^k-74245691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74245621) 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, 20096 + ... + 23501.

It is an arithmetic number, because the mean of its divisors is an integer number (10071138).

Almost surely, 2^74245691 is an apocalyptic number.

74245691 is a deficient number, since it is larger than the sum of its proper divisors (6323413).

74245691 is a wasteful number, since it uses less digits than its factorization.

74245691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43741.

The product of its digits is 60480, while the sum is 38.

The square root of 74245691 is about 8616.5939326395. The cubic root of 74245691 is about 420.2977688097.

The spelling of 74245691 in words is "seventy-four million, two hundred forty-five thousand, six hundred ninety-one".