1197605 has 4 divisors (see below), whose sum is σ = 1437132. Its totient is φ = 958080.

The previous prime is 1197601. The next prime is 1197617. The reversal of 1197605 is 5067911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5067911 = 31 ⋅163481.

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 279841 = 958^2 + 529^2 .

It is not a de Polignac number, because 1197605 - 2² = 1197601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119756 + ... + 119765.

It is an arithmetic number, because the mean of its divisors is an integer number (359283).

2^1197605 is an apocalyptic number.

It is an amenable number.

1197605 is a deficient number, since it is larger than the sum of its proper divisors (239527).

1197605 is an equidigital number, since it uses as much as digits as its factorization.

1197605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239526.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 1197605 is about 1094.3514060849. The cubic root of 1197605 is about 106.1951135202.

The spelling of 1197605 in words is "one million, one hundred ninety-seven thousand, six hundred five".