74407986 has 12 divisors (see below), whose sum is σ = 161217342. Its totient is φ = 24802656.

The previous prime is 74407981. The next prime is 74407987. The reversal of 74407986 is 68970447.

It can be written as a sum of positive squares in only one way, i.e., 71927361 + 2480625 = 8481^2 + 1575^2 .

It is not an unprimeable number, because it can be changed into a prime (74407981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2066871 + ... + 2066906.

Almost surely, 2^74407986 is an apocalyptic number.

74407986 is an abundant number, since it is smaller than the sum of its proper divisors (86809356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74407986 is a wasteful number, since it uses less digits than its factorization.

74407986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133785 (or 4133782 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 74407986 is about 8626.0063760700. The cubic root of 74407986 is about 420.6037914382.

The spelling of 74407986 in words is "seventy-four million, four hundred seven thousand, nine hundred eighty-six".