1406457 has 16 divisors (see below), whose sum is σ = 2244480. Its totient is φ = 865296.

The previous prime is 1406453. The next prime is 1406459. The reversal of 1406457 is 7546041.

1406457 is a `hidden beast` number, since 14 + 0 + 645 + 7 = 666.

It is not a de Polignac number, because 1406457 - 2² = 1406453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1406457.

It is not an unprimeable number, because it can be changed into a prime (1406453) 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, 1653 + ... + 2354.

It is an arithmetic number, because the mean of its divisors is an integer number (140280).

2^1406457 is an apocalyptic number.

It is an amenable number.

1406457 is a deficient number, since it is larger than the sum of its proper divisors (838023).

1406457 is a wasteful number, since it uses less digits than its factorization.

1406457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029 (or 4023 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1406457 is about 1185.9413982149. The cubic root of 1406457 is about 112.0406155840.

The spelling of 1406457 in words is "one million, four hundred six thousand, four hundred fifty-seven".