1056664 has 16 divisors (see below), whose sum is σ = 2264400. Its totient is φ = 452832.

The previous prime is 1056659. The next prime is 1056667. The reversal of 1056664 is 4666501.

It is a super-2 number, since 2×1056664² = 2233077617792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9379 + ... + 9490.

It is an arithmetic number, because the mean of its divisors is an integer number (141525).

2^1056664 is an apocalyptic number.

1056664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1056664 is an abundant number, since it is smaller than the sum of its proper divisors (1207736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1056664 is a wasteful number, since it uses less digits than its factorization.

1056664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18882 (or 18878 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1056664 is about 1027.9416325843. The cubic root of 1056664 is about 101.8542066787.

The spelling of 1056664 in words is "one million, fifty-six thousand, six hundred sixty-four".