1396681 has 8 divisors (see below), whose sum is σ = 1641024. Its totient is φ = 1171920.

The previous prime is 1396679. The next prime is 1396687. The reversal of 1396681 is 1866931.

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 1396681 - 2¹ = 1396679 is a prime.

It is a super-2 number, since 2×1396681² = 3901435631522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1396687) 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, 4741 + ... + 5026.

It is an arithmetic number, because the mean of its divisors is an integer number (205128).

2^1396681 is an apocalyptic number.

1396681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1396681 is a deficient number, since it is larger than the sum of its proper divisors (244343).

1396681 is a wasteful number, since it uses less digits than its factorization.

1396681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9791.

The product of its digits is 7776, while the sum is 34.

The square root of 1396681 is about 1181.8125908959. The cubic root of 1396681 is about 111.7804211946.

The spelling of 1396681 in words is "one million, three hundred ninety-six thousand, six hundred eighty-one".