1230686 has 4 divisors (see below), whose sum is σ = 1846032. Its totient is φ = 615342.

The previous prime is 1230667. The next prime is 1230689. The reversal of 1230686 is 6860321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307670 + ... + 307673.

It is an arithmetic number, because the mean of its divisors is an integer number (461508).

2^1230686 is an apocalyptic number.

1230686 is a deficient number, since it is larger than the sum of its proper divisors (615346).

1230686 is an equidigital number, since it uses as much as digits as its factorization.

1230686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615345.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1230686 is about 1109.3628802155. The cubic root of 1230686 is about 107.1640422024.

The spelling of 1230686 in words is "one million, two hundred thirty thousand, six hundred eighty-six".