1407643 has 4 divisors (see below), whose sum is σ = 1416240. Its totient is φ = 1399048.

The previous prime is 1407629. The next prime is 1407647. The reversal of 1407643 is 3467041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3467041 = 983 ⋅3527.

It is a cyclic number.

It is not a de Polignac number, because 1407643 - 2⁵ = 1407611 is a prime.

It is a Duffinian number.

1407643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1407647) 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 3 ways as a sum of consecutive naturals, for example, 4048 + ... + 4381.

It is an arithmetic number, because the mean of its divisors is an integer number (354060).

2^1407643 is an apocalyptic number.

1407643 is a deficient number, since it is larger than the sum of its proper divisors (8597).

1407643 is an equidigital number, since it uses as much as digits as its factorization.

1407643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8596.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 1407643 is about 1186.4413175543. The cubic root of 1407643 is about 112.0720996221.

The spelling of 1407643 in words is "one million, four hundred seven thousand, six hundred forty-three".