2057646 has 16 divisors (see below), whose sum is σ = 4357584. Its totient is φ = 645504.

The previous prime is 2057639. The next prime is 2057659. The reversal of 2057646 is 6467502.

It is a super-2 number, since 2×2057646² = 8467814122632, 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 7 ways as a sum of consecutive naturals, for example, 9985 + ... + 10188.

It is an arithmetic number, because the mean of its divisors is an integer number (272349).

2^2057646 is an apocalyptic number.

2057646 is an abundant number, since it is smaller than the sum of its proper divisors (2299938).

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

2057646 is a wasteful number, since it uses less digits than its factorization.

2057646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20195.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 2057646 is about 1434.4497202760. The cubic root of 2057646 is about 127.1911478749.

The spelling of 2057646 in words is "two million, fifty-seven thousand, six hundred forty-six".