1371897 has 10 divisors (see below), whose sum is σ = 2049498. Its totient is φ = 914544.

The previous prime is 1371893. The next prime is 1371899. The reversal of 1371897 is 7981731.

It can be written as a sum of positive squares in only one way, i.e., 1089936 + 281961 = 1044^2 + 531^2 .

It is not a de Polignac number, because 1371897 - 2² = 1371893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1371893) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8388 + ... + 8549.

2^1371897 is an apocalyptic number.

It is an amenable number.

1371897 is a deficient number, since it is larger than the sum of its proper divisors (677601).

1371897 is an equidigital number, since it uses as much as digits as its factorization.

1371897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16949 (or 16940 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 1371897 is about 1171.2800689844. The cubic root of 1371897 is about 111.1152929167.

The spelling of 1371897 in words is "one million, three hundred seventy-one thousand, eight hundred ninety-seven".