8105978 has 4 divisors (see below), whose sum is σ = 12158970. Its totient is φ = 4052988.

The previous prime is 8105941. The next prime is 8105983. The reversal of 8105978 is 8795018.

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., 8025889 + 80089 = 2833^2 + 283^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2026493 + ... + 2026496.

Almost surely, 2^8105978 is an apocalyptic number.

8105978 is a deficient number, since it is larger than the sum of its proper divisors (4052992).

8105978 is a wasteful number, since it uses less digits than its factorization.

8105978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052991.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 8105978 is about 2847.0999279969. The cubic root of 8105978 is about 200.8792786800.

The spelling of 8105978 in words is "eight million, one hundred five thousand, nine hundred seventy-eight".