1406537 has 4 divisors (see below), whose sum is σ = 1534416. Its totient is φ = 1278660.

The previous prime is 1406533. The next prime is 1406539. The reversal of 1406537 is 7356041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1406537 - 2² = 1406533 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63923 + ... + 63944.

It is an arithmetic number, because the mean of its divisors is an integer number (383604).

2^1406537 is an apocalyptic number.

It is an amenable number.

1406537 is a deficient number, since it is larger than the sum of its proper divisors (127879).

1406537 is a wasteful number, since it uses less digits than its factorization.

1406537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127878.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1406537 is about 1185.9751262147. The cubic root of 1406537 is about 112.0427398531.

The spelling of 1406537 in words is "one million, four hundred six thousand, five hundred thirty-seven".