1057590686 has 4 divisors (see below), whose sum is σ = 1586386032. Its totient is φ = 528795342.

The previous prime is 1057590671. The next prime is 1057590691. The reversal of 1057590686 is 6860957501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6860957501 = 1567 ⋅4378403.

It is a super-2 number, since 2×1057590686² = 2236996118227901192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057590686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264397670 + ... + 264397673.

It is an arithmetic number, because the mean of its divisors is an integer number (396596508).

Almost surely, 2^1057590686 is an apocalyptic number.

1057590686 is a deficient number, since it is larger than the sum of its proper divisors (528795346).

1057590686 is an equidigital number, since it uses as much as digits as its factorization.

1057590686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528795345.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 1057590686 is about 32520.6193975453. The cubic root of 1057590686 is about 1018.8397309097.

The spelling of 1057590686 in words is "one billion, fifty-seven million, five hundred ninety thousand, six hundred eighty-six".