1097664 has 28 divisors (see below), whose sum is σ = 2904744. Its totient is φ = 365824.

The previous prime is 1097659. The next prime is 1097669. The reversal of 1097664 is 4667901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1097659) and next prime (1097669).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097669) 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, 2667 + ... + 3050.

2^1097664 is an apocalyptic number.

It is an amenable number.

1097664 is an abundant number, since it is smaller than the sum of its proper divisors (1807080).

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

1097664 is an equidigital number, since it uses as much as digits as its factorization.

1097664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732 (or 5722 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1097664 is about 1047.6946119934. The cubic root of 1097664 is about 103.1548868381.

The spelling of 1097664 in words is "one million, ninety-seven thousand, six hundred sixty-four".