1406811 has 16 divisors (see below), whose sum is σ = 2213888. Its totient is φ = 777600.

The previous prime is 1406807. The next prime is 1406827. The reversal of 1406811 is 1186041.

It is not a de Polignac number, because 1406811 - 2² = 1406807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (138368).

2^1406811 is an apocalyptic number.

1406811 is a deficient number, since it is larger than the sum of its proper divisors (807077).

1406811 is a wasteful number, since it uses less digits than its factorization.

1406811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1406811 is about 1186.0906373461. The cubic root of 1406811 is about 112.0500148644.

Adding to 1406811 its product of nonzero digits (192), we get a triangular number (1407003 = T₁₆₇₇).

The spelling of 1406811 in words is "one million, four hundred six thousand, eight hundred eleven".