1566113 has 8 divisors (see below), whose sum is σ = 1663200. Its totient is φ = 1470528.

The previous prime is 1566107. The next prime is 1566121. The reversal of 1566113 is 3116651.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1566113 - 2⁶ = 1566049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1566143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2345 + ... + 2937.

It is an arithmetic number, because the mean of its divisors is an integer number (207900).

2^1566113 is an apocalyptic number.

It is an amenable number.

1566113 is a deficient number, since it is larger than the sum of its proper divisors (97087).

1566113 is a wasteful number, since it uses less digits than its factorization.

1566113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751.

The product of its digits is 540, while the sum is 23.

The square root of 1566113 is about 1251.4443655233. Note that the first 3 decimals coincide. The cubic root of 1566113 is about 116.1290923130.

The spelling of 1566113 in words is "one million, five hundred sixty-six thousand, one hundred thirteen".