1977868 has 12 divisors (see below), whose sum is σ = 3471160. Its totient is φ = 986112.

The previous prime is 1977863. The next prime is 1977917. The reversal of 1977868 is 8687791.

1977868 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1977863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188 + ... + 2956.

2^1977868 is an apocalyptic number.

It is an amenable number.

1977868 is a deficient number, since it is larger than the sum of its proper divisors (1493292).

1977868 is a wasteful number, since it uses less digits than its factorization.

1977868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1414 counting only the distinct ones).

The product of its digits is 169344, while the sum is 46.

The square root of 1977868 is about 1406.3669506925. The cubic root of 1977868 is about 125.5256372126.

The spelling of 1977868 in words is "one million, nine hundred seventy-seven thousand, eight hundred sixty-eight".