1097655 has 24 divisors (see below), whose sum is σ = 1906128. Its totient is φ = 539136.

The previous prime is 1097653. The next prime is 1097659. The reversal of 1097655 is 5567901.

It is not a de Polignac number, because 1097655 - 2¹ = 1097653 is a prime.

1097655 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2319 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (79422).

2^1097655 is an apocalyptic number.

1097655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1097655 is a deficient number, since it is larger than the sum of its proper divisors (808473).

1097655 is a wasteful number, since it uses less digits than its factorization.

1097655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 1097655 is about 1047.6903168399. The cubic root of 1097655 is about 103.1546049071.

The spelling of 1097655 in words is "one million, ninety-seven thousand, six hundred fifty-five".