1597340 has 12 divisors (see below), whose sum is σ = 3354456. Its totient is φ = 638928.

The previous prime is 1597331. The next prime is 1597357. The reversal of 1597340 is 437951.

1597340 = 180² + 181² + ... + 219².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39914 + ... + 39953.

It is an arithmetic number, because the mean of its divisors is an integer number (279538).

2^1597340 is an apocalyptic number.

1597340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1597340 is an abundant number, since it is smaller than the sum of its proper divisors (1757116).

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

1597340 is a wasteful number, since it uses less digits than its factorization.

1597340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79876 (or 79874 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1597340 is about 1263.8591693698. The cubic root of 1597340 is about 116.8958578501.

The spelling of 1597340 in words is "one million, five hundred ninety-seven thousand, three hundred forty".