10661158 has 4 divisors (see below), whose sum is σ = 15991740. Its totient is φ = 5330578.

The previous prime is 10661111. The next prime is 10661171. The reversal of 10661158 is 85116601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×10661158² = 227320579801928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665288 + ... + 2665291.

It is an arithmetic number, because the mean of its divisors is an integer number (3997935).

Almost surely, 2^10661158 is an apocalyptic number.

10661158 is a deficient number, since it is larger than the sum of its proper divisors (5330582).

10661158 is an equidigital number, since it uses as much as digits as its factorization.

10661158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330581.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 10661158 is about 3265.1428758938. The cubic root of 10661158 is about 220.0905825332.

Adding to 10661158 its reverse (85116601), we get a palindrome (95777759).

The spelling of 10661158 in words is "ten million, six hundred sixty-one thousand, one hundred fifty-eight".