1056658 has 4 divisors (see below), whose sum is σ = 1584990. Its totient is φ = 528328.

The previous prime is 1056641. The next prime is 1056659. The reversal of 1056658 is 8566501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8566501 = 809 ⋅10589.

It can be written as a sum of positive squares in only one way, i.e., 603729 + 452929 = 777^2 + 673^2 .

It is a super-2 number, since 2×1056658² = 2233052257928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1056659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264163 + ... + 264166.

2^1056658 is an apocalyptic number.

1056658 is a deficient number, since it is larger than the sum of its proper divisors (528332).

1056658 is an equidigital number, since it uses as much as digits as its factorization.

1056658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528331.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1056658 is about 1027.9387141265. The cubic root of 1056658 is about 101.8540138939.

It can be divided in two parts, 10 and 56658, that multiplied together give a triangular number (566580 = T₁₀₆₄).

The spelling of 1056658 in words is "one million, fifty-six thousand, six hundred fifty-eight".