1005656 has 8 divisors (see below), whose sum is σ = 1885620. Its totient is φ = 502824.

The previous prime is 1005647. The next prime is 1005661. The reversal of 1005656 is 6565001.

1005656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1005656² = 2022687980672, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62846 + ... + 62861.

2^1005656 is an apocalyptic number.

It is an amenable number.

1005656 is a deficient number, since it is larger than the sum of its proper divisors (879964).

1005656 is a wasteful number, since it uses less digits than its factorization.

1005656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125713 (or 125709 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1005656 is about 1002.8240124768. The cubic root of 1005656 is about 100.1881789979.

It can be divided in two parts, 1005 and 656, that added together give a palindrome (1661).

The spelling of 1005656 in words is "one million, five thousand, six hundred fifty-six".