1403668 has 12 divisors (see below), whose sum is σ = 2807392. Its totient is φ = 601560.

The previous prime is 1403657. The next prime is 1403681. The reversal of 1403668 is 8663041.

1403668 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 50131 = 1403668 / (1 + 4 + 0 + 3 + 6 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25038 + ... + 25093.

2^1403668 is an apocalyptic number.

It is an amenable number.

1403668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1403668 is a wasteful number, since it uses less digits than its factorization.

1403668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50142 (or 50140 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1403668 is about 1184.7649555925. The cubic root of 1403668 is about 111.9665078427.

The spelling of 1403668 in words is "one million, four hundred three thousand, six hundred sixty-eight".