1564006 has 4 divisors (see below), whose sum is σ = 2346012. Its totient is φ = 782002.

The previous prime is 1564001. The next prime is 1564007. The reversal of 1564006 is 6004651.

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

It is a super-2 number, since 2×1564006² = 4892229536072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391000 + ... + 391003.

It is an arithmetic number, because the mean of its divisors is an integer number (586503).

2^1564006 is an apocalyptic number.

1564006 is a deficient number, since it is larger than the sum of its proper divisors (782006).

1564006 is an equidigital number, since it uses as much as digits as its factorization.

1564006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782005.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1564006 is about 1250.6022549156. The cubic root of 1564006 is about 116.0769901105.

Adding to 1564006 its reverse (6004651), we get a palindrome (7568657).

The spelling of 1564006 in words is "one million, five hundred sixty-four thousand, six".