1426647 has 4 divisors (see below), whose sum is σ = 1902200. Its totient is φ = 951096.

The previous prime is 1426643. The next prime is 1426669. The reversal of 1426647 is 7466241.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1426647 - 2² = 1426643 is a prime.

It is a D-number.

It is a Duffinian number.

1426647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237772 + ... + 237777.

It is an arithmetic number, because the mean of its divisors is an integer number (475550).

2^1426647 is an apocalyptic number.

1426647 is a deficient number, since it is larger than the sum of its proper divisors (475553).

1426647 is an equidigital number, since it uses as much as digits as its factorization.

1426647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475552.

The product of its digits is 8064, while the sum is 30.

The square root of 1426647 is about 1194.4232918024. The cubic root of 1426647 is about 112.5741930347.

The spelling of 1426647 in words is "one million, four hundred twenty-six thousand, six hundred forty-seven".