1697312 has 48 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 779520.

The previous prime is 1697309. The next prime is 1697317. The reversal of 1697312 is 2137961.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1697317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28739 + ... + 28797.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2^1697312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1697312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1697312 is an abundant number, since it is smaller than the sum of its proper divisors (1931488).

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

1697312 is a wasteful number, since it uses less digits than its factorization.

1697312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 121 counting only the distinct ones).

The product of its digits is 2268, while the sum is 29.

The square root of 1697312 is about 1302.8092723035. The cubic root of 1697312 is about 119.2853824250.

The spelling of 1697312 in words is "one million, six hundred ninety-seven thousand, three hundred twelve".