1406671 has 8 divisors (see below), whose sum is σ = 1624064. Its totient is φ = 1193400.

The previous prime is 1406651. The next prime is 1406677. The reversal of 1406671 is 1766041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1406671 - 2⁷ = 1406543 is a prime.

It is a Duffinian number.

1406671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255 + ... + 1696.

It is an arithmetic number, because the mean of its divisors is an integer number (203008).

2^1406671 is an apocalyptic number.

1406671 is a deficient number, since it is larger than the sum of its proper divisors (217393).

1406671 is a wasteful number, since it uses less digits than its factorization.

1406671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1406671 is about 1186.0316184655. The cubic root of 1406671 is about 112.0462978234.

The spelling of 1406671 in words is "one million, four hundred six thousand, six hundred seventy-one".