1201797 has 20 divisors (see below), whose sum is σ = 1848396. Its totient is φ = 777600.

The previous prime is 1201793. The next prime is 1201813. The reversal of 1201797 is 7971021.

It can be written as a sum of positive squares in 2 ways, for example, as 1147041 + 54756 = 1071^2 + 234^2 .

It is not a de Polignac number, because 1201797 - 2² = 1201793 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1201797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201793) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2797 + ... + 3197.

2^1201797 is an apocalyptic number.

It is an amenable number.

1201797 is a deficient number, since it is larger than the sum of its proper divisors (646599).

1201797 is an equidigital number, since it uses as much as digits as its factorization.

1201797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 1201797 is about 1096.2650227021. The cubic root of 1201797 is about 106.3188748359.

The spelling of 1201797 in words is "one million, two hundred one thousand, seven hundred ninety-seven".