3911668 has 12 divisors (see below), whose sum is σ = 6862212. Its totient is φ = 1951040.

The previous prime is 3911653. The next prime is 3911681. The reversal of 3911668 is 8661193.

It can be written as a sum of positive squares in 2 ways, for example, as 1774224 + 2137444 = 1332^2 + 1462^2 .

It is a super-2 number, since 2×3911668² = 30602293084448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146 + ... + 3022.

It is an arithmetic number, because the mean of its divisors is an integer number (571851).

Almost surely, 2^3911668 is an apocalyptic number.

It is an amenable number.

3911668 is a deficient number, since it is larger than the sum of its proper divisors (2950544).

3911668 is a wasteful number, since it uses less digits than its factorization.

3911668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402 (or 2400 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 3911668 is about 1977.7937202853. The cubic root of 3911668 is about 157.5629109559.

The spelling of 3911668 in words is "three million, nine hundred eleven thousand, six hundred sixty-eight".