1240684 has 24 divisors (see below), whose sum is σ = 2279088. Its totient is φ = 590400.

The previous prime is 1240669. The next prime is 1240691. The reversal of 1240684 is 4860421.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12234 + ... + 12334.

It is an arithmetic number, because the mean of its divisors is an integer number (94962).

2^1240684 is an apocalyptic number.

It is an amenable number.

1240684 is a deficient number, since it is larger than the sum of its proper divisors (1038404).

1240684 is a wasteful number, since it uses less digits than its factorization.

1240684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1240684 is about 1113.8599552906. The cubic root of 1240684 is about 107.4534574075.

The spelling of 1240684 in words is "one million, two hundred forty thousand, six hundred eighty-four".