2057690 has 16 divisors (see below), whose sum is σ = 3731400. Its totient is φ = 816960.

The previous prime is 2057689. The next prime is 2057701. The reversal of 2057690 is 967502.

It can be written as a sum of positive squares in 4 ways, for example, as 1194649 + 863041 = 1093^2 + 929^2 .

It is a super-2 number, since 2×2057690² = 8468176272200, which contains 22 as substring.

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, 800 + ... + 2180.

2^2057690 is an apocalyptic number.

2057690 is a deficient number, since it is larger than the sum of its proper divisors (1673710).

2057690 is a wasteful number, since it uses less digits than its factorization.

2057690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 2057690 is about 1434.4650570857. The cubic root of 2057690 is about 127.1920544725.

The spelling of 2057690 in words is "two million, fifty-seven thousand, six hundred ninety".