1097564 has 12 divisors (see below), whose sum is σ = 2068584. Its totient is φ = 506544.

The previous prime is 1097557. The next prime is 1097599. The reversal of 1097564 is 4657901.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1097564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10502 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (172382).

2^1097564 is an apocalyptic number.

It is an amenable number.

1097564 is a deficient number, since it is larger than the sum of its proper divisors (971020).

1097564 is a wasteful number, since it uses less digits than its factorization.

1097564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21124 (or 21122 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1097564 is about 1047.6468870760. The cubic root of 1097564 is about 103.1517541849.

It can be divided in two parts, 1097 and 564, that added together give a palindrome (1661).

The spelling of 1097564 in words is "one million, ninety-seven thousand, five hundred sixty-four".