426630647 has 4 divisors (see below), whose sum is σ = 426832056. Its totient is φ = 426429240.

The previous prime is 426630643. The next prime is 426630653. The reversal of 426630647 is 746036624.

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

It is a cyclic number.

It is not a de Polignac number, because 426630647 - 2² = 426630643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426630647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426630641) 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, 97493 + ... + 101774.

It is an arithmetic number, because the mean of its divisors is an integer number (106708014).

Almost surely, 2^426630647 is an apocalyptic number.

426630647 is a deficient number, since it is larger than the sum of its proper divisors (201409).

426630647 is a wasteful number, since it uses less digits than its factorization.

426630647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201408.

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 426630647 is about 20655.0392640634. The cubic root of 426630647 is about 752.8076376311.

The spelling of 426630647 in words is "four hundred twenty-six million, six hundred thirty thousand, six hundred forty-seven".