1248681 has 16 divisors (see below), whose sum is σ = 1925504. Its totient is φ = 705024.

The previous prime is 1248673. The next prime is 1248691. The reversal of 1248681 is 1868421.

It is not a de Polignac number, because 1248681 - 2³ = 1248673 is a prime.

It is a super-2 number, since 2×1248681² = 3118408479522, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1248631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1731 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (120344).

2^1248681 is an apocalyptic number.

It is an amenable number.

1248681 is a deficient number, since it is larger than the sum of its proper divisors (676823).

1248681 is an equidigital number, since it uses as much as digits as its factorization.

1248681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720.

The product of its digits is 3072, while the sum is 30.

The square root of 1248681 is about 1117.4439583263. The cubic root of 1248681 is about 107.6838318421.

The spelling of 1248681 in words is "one million, two hundred forty-eight thousand, six hundred eighty-one".