1688057 has 8 divisors (see below), whose sum is σ = 1939200. Its totient is φ = 1439424.

The previous prime is 1688047. The next prime is 1688069. The reversal of 1688057 is 7508861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1688057 - 2⁴ = 1688041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1688047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1169 + ... + 2177.

It is an arithmetic number, because the mean of its divisors is an integer number (242400).

2^1688057 is an apocalyptic number.

It is an amenable number.

1688057 is a deficient number, since it is larger than the sum of its proper divisors (251143).

1688057 is a wasteful number, since it uses less digits than its factorization.

1688057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1688057 is about 1299.2524773884. The cubic root of 1688057 is about 119.0681764550.

The spelling of 1688057 in words is "one million, six hundred eighty-eight thousand, fifty-seven".