1097765 has 8 divisors (see below), whose sum is σ = 1325688. Its totient is φ = 872640.

The previous prime is 1097743. The next prime is 1097783. The reversal of 1097765 is 5677901.

It can be written as a sum of positive squares in 4 ways, for example, as 101761 + 996004 = 319^2 + 998^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1097765 - 2¹⁰ = 1096741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299 + ... + 1511.

It is an arithmetic number, because the mean of its divisors is an integer number (165711).

2^1097765 is an apocalyptic number.

It is an amenable number.

1097765 is a deficient number, since it is larger than the sum of its proper divisors (227923).

1097765 is a wasteful number, since it uses less digits than its factorization.

1097765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 1097765 is about 1047.7428119534. The cubic root of 1097765 is about 103.1580506247.

The spelling of 1097765 in words is "one million, ninety-seven thousand, seven hundred sixty-five".