83774986 has 4 divisors (see below), whose sum is σ = 125662482. Its totient is φ = 41887492.

The previous prime is 83774983. The next prime is 83774987. The reversal of 83774986 is 68947738.

It is a happy number.

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., 49914225 + 33860761 = 7065^2 + 5819^2 .

It is not an unprimeable number, because it can be changed into a prime (83774981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20943745 + ... + 20943748.

Almost surely, 2^83774986 is an apocalyptic number.

83774986 is a deficient number, since it is larger than the sum of its proper divisors (41887496).

83774986 is a wasteful number, since it uses less digits than its factorization.

83774986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41887495.

The product of its digits is 2032128, while the sum is 52.

The square root of 83774986 is about 9152.8676380684. The cubic root of 83774986 is about 437.5605114669.

The spelling of 83774986 in words is "eighty-three million, seven hundred seventy-four thousand, nine hundred eighty-six".