1297087 has 4 divisors (see below), whose sum is σ = 1415016. Its totient is φ = 1179160.

The previous prime is 1297063. The next prime is 1297091. The reversal of 1297087 is 7807921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1297087 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 (1297027) 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, 58948 + ... + 58969.

It is an arithmetic number, because the mean of its divisors is an integer number (353754).

2^1297087 is an apocalyptic number.

1297087 is a deficient number, since it is larger than the sum of its proper divisors (117929).

1297087 is a wasteful number, since it uses less digits than its factorization.

1297087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117928.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1297087 is about 1138.8972736819. The cubic root of 1297087 is about 109.0577086890.

The spelling of 1297087 in words is "one million, two hundred ninety-seven thousand, eighty-seven".