1298647 has 12 divisors (see below), whose sum is σ = 1600560. Its totient is φ = 1046976.

The previous prime is 1298641. The next prime is 1298651. The reversal of 1298647 is 7468921.

It is a de Polignac number, because none of the positive numbers 2^k-1298647 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54 + ... + 1612.

It is an arithmetic number, because the mean of its divisors is an integer number (133380).

2^1298647 is an apocalyptic number.

1298647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1298647 is a deficient number, since it is larger than the sum of its proper divisors (301913).

1298647 is a wasteful number, since it uses less digits than its factorization.

1298647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1583 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 1298647 is about 1139.5819408889. The cubic root of 1298647 is about 109.1014122253.

The spelling of 1298647 in words is "one million, two hundred ninety-eight thousand, six hundred forty-seven".