1230681 has 16 divisors (see below), whose sum is σ = 1771200. Its totient is φ = 757248.

The previous prime is 1230667. The next prime is 1230689. The reversal of 1230681 is 1860321.

It is not a de Polignac number, because 1230681 - 2⁹ = 1230169 is a prime.

It is a super-2 number, since 2×1230681² = 3029151447522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1230689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2805 + ... + 3213.

It is an arithmetic number, because the mean of its divisors is an integer number (110700).

2^1230681 is an apocalyptic number.

It is an amenable number.

1230681 is a deficient number, since it is larger than the sum of its proper divisors (540519).

1230681 is a wasteful number, since it uses less digits than its factorization.

1230681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1230681 is about 1109.3606266675. The cubic root of 1230681 is about 107.1638970744.

The spelling of 1230681 in words is "one million, two hundred thirty thousand, six hundred eighty-one".