7198866 has 12 divisors (see below), whose sum is σ = 15597582. Its totient is φ = 2399616.

The previous prime is 7198847. The next prime is 7198879. The reversal of 7198866 is 6688917.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 772641 = 2535^2 + 879^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199951 + ... + 199986.

Almost surely, 2^7198866 is an apocalyptic number.

7198866 is an abundant number, since it is smaller than the sum of its proper divisors (8398716).

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

7198866 is a wasteful number, since it uses less digits than its factorization.

7198866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399945 (or 399942 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 7198866 is about 2683.0702562549. The cubic root of 7198866 is about 193.0877387503.

The spelling of 7198866 in words is "seven million, one hundred ninety-eight thousand, eight hundred sixty-six".