1597965 has 8 divisors (see below), whose sum is σ = 2556768. Its totient is φ = 852240.

The previous prime is 1597961. The next prime is 1597969. The reversal of 1597965 is 5697951.

It is an interprime number because it is at equal distance from previous prime (1597961) and next prime (1597969).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1597965 - 2² = 1597961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597961) 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, 53251 + ... + 53280.

It is an arithmetic number, because the mean of its divisors is an integer number (319596).

2^1597965 is an apocalyptic number.

1597965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1597965 is a deficient number, since it is larger than the sum of its proper divisors (958803).

1597965 is a wasteful number, since it uses less digits than its factorization.

1597965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106539.

The product of its digits is 85050, while the sum is 42.

The square root of 1597965 is about 1264.1064037493. The cubic root of 1597965 is about 116.9111020236.

The spelling of 1597965 in words is "one million, five hundred ninety-seven thousand, nine hundred sixty-five".