403684 has 12 divisors (see below), whose sum is σ = 723184. Its totient is φ = 197064.

The previous prime is 403681. The next prime is 403687. The reversal of 403684 is 486304.

It is an interprime number because it is at equal distance from previous prime (403681) and next prime (403687).

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 not an unprimeable number, because it can be changed into a prime (403681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002 + ... + 1345.

2⁴⁰³⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

403684 is a deficient number, since it is larger than the sum of its proper divisors (319500).

403684 is a wasteful number, since it uses less digits than its factorization.

403684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394 (or 2392 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 403684 is about 635.3613145290. The cubic root of 403684 is about 73.9061386058.

Adding to 403684 its reverse (486304), we get a palindrome (889988).

The spelling of 403684 in words is "four hundred three thousand, six hundred eighty-four".