1597947 has 8 divisors (see below), whose sum is σ = 2294544. Its totient is φ = 983328.

The previous prime is 1597943. The next prime is 1597951. The reversal of 1597947 is 7497951.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1597943) and next prime (1597951).

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

It is not a de Polignac number, because 1597947 - 2² = 1597943 is a prime.

It is a super-2 number, since 2×1597947² = 5106869229618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1597899 and 1597908.

It is not an unprimeable number, because it can be changed into a prime (1597943) 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, 20448 + ... + 20525.

It is an arithmetic number, because the mean of its divisors is an integer number (286818).

2^1597947 is an apocalyptic number.

1597947 is a deficient number, since it is larger than the sum of its proper divisors (696597).

1597947 is a wasteful number, since it uses less digits than its factorization.

1597947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40989.

The product of its digits is 79380, while the sum is 42.

The square root of 1597947 is about 1264.0992840754. The cubic root of 1597947 is about 116.9106630470.

The spelling of 1597947 in words is "one million, five hundred ninety-seven thousand, nine hundred forty-seven".