74857986 has 96 divisors (see below), whose sum is σ = 203832000. Its totient is φ = 20248704.

The previous prime is 74857973. The next prime is 74857999. The reversal of 74857986 is 68975847.

It is an interprime number because it is at equal distance from previous prime (74857973) and next prime (74857999).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49530 + ... + 51018.

It is an arithmetic number, because the mean of its divisors is an integer number (2123250).

Almost surely, 2^74857986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74857986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101916000).

74857986 is an abundant number, since it is smaller than the sum of its proper divisors (128974014).

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

74857986 is a wasteful number, since it uses less digits than its factorization.

74857986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1520 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 74857986 is about 8652.0509707236. The cubic root of 74857986 is about 421.4499883673.

The spelling of 74857986 in words is "seventy-four million, eight hundred fifty-seven thousand, nine hundred eighty-six".