1406631 has 8 divisors (see below), whose sum is σ = 1985904. Its totient is φ = 882560.

The previous prime is 1406617. The next prime is 1406633. The reversal of 1406631 is 1366041.

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 1406631 - 2¹¹ = 1404583 is a prime.

It is a super-2 number, since 2×1406631² = 3957221540322, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1406598 and 1406607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13740 + ... + 13841.

It is an arithmetic number, because the mean of its divisors is an integer number (248238).

2^1406631 is an apocalyptic number.

1406631 is a deficient number, since it is larger than the sum of its proper divisors (579273).

1406631 is a wasteful number, since it uses less digits than its factorization.

1406631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27601.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1406631 is about 1186.0147553888. The cubic root of 1406631 is about 112.0452357663.

The spelling of 1406631 in words is "one million, four hundred six thousand, six hundred thirty-one".