1057669 has 4 divisors (see below), whose sum is σ = 1070496. Its totient is φ = 1044844.

The previous prime is 1057663. The next prime is 1057681. The reversal of 1057669 is 9667501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1057669 - 2⁷ = 1057541 is a prime.

It is a super-2 number, since 2×1057669² = 2237327427122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6289 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (267624).

2^1057669 is an apocalyptic number.

It is an amenable number.

1057669 is a deficient number, since it is larger than the sum of its proper divisors (12827).

1057669 is an equidigital number, since it uses as much as digits as its factorization.

1057669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12826.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1057669 is about 1028.4303573894. The cubic root of 1057669 is about 101.8864878460.

The spelling of 1057669 in words is "one million, fifty-seven thousand, six hundred sixty-nine".