1097620 has 12 divisors (see below), whose sum is σ = 2305044. Its totient is φ = 439040.

The previous prime is 1097599. The next prime is 1097627. The reversal of 1097620 is 267901.

It can be written as a sum of positive squares in 2 ways, for example, as 198916 + 898704 = 446^2 + 948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27421 + ... + 27460.

It is an arithmetic number, because the mean of its divisors is an integer number (192087).

2^1097620 is an apocalyptic number.

1097620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1097620 is an abundant number, since it is smaller than the sum of its proper divisors (1207424).

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

1097620 is a wasteful number, since it uses less digits than its factorization.

1097620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54890 (or 54888 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1097620 is about 1047.6736132976. The cubic root of 1097620 is about 103.1535084941.

The spelling of 1097620 in words is "one million, ninety-seven thousand, six hundred twenty".