74893666 has 4 divisors (see below), whose sum is σ = 112340502. Its totient is φ = 37446832.

The previous prime is 74893627. The next prime is 74893667. The reversal of 74893666 is 66639847.

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

It can be written as a sum of positive squares in only one way, i.e., 46580625 + 28313041 = 6825^2 + 5321^2 .

It is a super-2 number, since 2×74893666² = 11218122413839112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74893667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18723415 + ... + 18723418.

Almost surely, 2^74893666 is an apocalyptic number.

74893666 is a deficient number, since it is larger than the sum of its proper divisors (37446836).

74893666 is a wasteful number, since it uses less digits than its factorization.

74893666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37446835.

The product of its digits is 1306368, while the sum is 49.

The square root of 74893666 is about 8654.1126639304. The cubic root of 74893666 is about 421.5169371232.

The spelling of 74893666 in words is "seventy-four million, eight hundred ninety-three thousand, six hundred sixty-six".