1298681 has 8 divisors (see below), whose sum is σ = 1393920. Its totient is φ = 1205568.

The previous prime is 1298653. The next prime is 1298699. The reversal of 1298681 is 1868921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1298681 - 2⁶ = 1298617 is a prime.

It is a super-2 number, since 2×1298681² = 3373144679522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1298611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860 + ... + 1826.

It is an arithmetic number, because the mean of its divisors is an integer number (174240).

2^1298681 is an apocalyptic number.

It is an amenable number.

1298681 is a deficient number, since it is larger than the sum of its proper divisors (95239).

1298681 is an equidigital number, since it uses as much as digits as its factorization.

1298681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063.

The product of its digits is 6912, while the sum is 35.

The square root of 1298681 is about 1139.5968585425. The cubic root of 1298681 is about 109.1023643484.

The spelling of 1298681 in words is "one million, two hundred ninety-eight thousand, six hundred eighty-one".