10566399 has 16 divisors (see below), whose sum is σ = 14519808. Its totient is φ = 6831552.

The previous prime is 10566389. The next prime is 10566403. The reversal of 10566399 is 99366501.

It is not a de Polignac number, because 10566399 - 2⁹ = 10565887 is a prime.

It is a super-2 number, since 2×10566399² = 223297575654402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10566379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19044 + ... + 19590.

It is an arithmetic number, because the mean of its divisors is an integer number (907488).

Almost surely, 2^10566399 is an apocalyptic number.

10566399 is a deficient number, since it is larger than the sum of its proper divisors (3953409).

10566399 is a wasteful number, since it uses less digits than its factorization.

10566399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 10566399 is about 3250.5997908078. The cubic root of 10566399 is about 219.4365678931.

The spelling of 10566399 in words is "ten million, five hundred sixty-six thousand, three hundred ninety-nine".