74457685 has 8 divisors (see below), whose sum is σ = 90270936. Its totient is φ = 58951680.

The previous prime is 74457683. The next prime is 74457689. The reversal of 74457685 is 58675447.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6922161 + 67535524 = 2631^2 + 8218^2 .

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

It is not a de Polignac number, because 74457685 - 2¹ = 74457683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74457683) 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, 76276 + ... + 77245.

It is an arithmetic number, because the mean of its divisors is an integer number (11283867).

Almost surely, 2^74457685 is an apocalyptic number.

It is an amenable number.

74457685 is a deficient number, since it is larger than the sum of its proper divisors (15813251).

74457685 is a wasteful number, since it uses less digits than its factorization.

74457685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153623.

The product of its digits is 940800, while the sum is 46.

The square root of 74457685 is about 8628.8866605142. The cubic root of 74457685 is about 420.6974146126.

The spelling of 74457685 in words is "seventy-four million, four hundred fifty-seven thousand, six hundred eighty-five".