4057686 has 12 divisors (see below), whose sum is σ = 8791692. Its totient is φ = 1352556.

The previous prime is 4057681. The next prime is 4057687. The reversal of 4057686 is 6867504.

It is a happy number.

4057686 is a `hidden beast` number, since 4 + 0 + 576 + 86 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 4057686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4057681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112696 + ... + 112731.

It is an arithmetic number, because the mean of its divisors is an integer number (732641).

Almost surely, 2^4057686 is an apocalyptic number.

4057686 is an abundant number, since it is smaller than the sum of its proper divisors (4734006).

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

4057686 is a wasteful number, since it uses less digits than its factorization.

4057686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225435 (or 225432 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 4057686 is about 2014.3698766612. The cubic root of 4057686 is about 159.4995561483.

The spelling of 4057686 in words is "four million, fifty-seven thousand, six hundred eighty-six".