1097690 has 32 divisors (see below), whose sum is σ = 2286144. Its totient is φ = 375040.

The previous prime is 1097669. The next prime is 1097699. The reversal of 1097690 is 967901.

It is a super-2 number, since 2×1097690² = 2409846672200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1097699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1577 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (71442).

2^1097690 is an apocalyptic number.

1097690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1097690 is an abundant number, since it is smaller than the sum of its proper divisors (1188454).

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

1097690 is a wasteful number, since it uses less digits than its factorization.

1097690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 1097690 is about 1047.7070201158. The cubic root of 1097690 is about 103.1557012967.

The spelling of 1097690 in words is "one million, ninety-seven thousand, six hundred ninety".