420795667 has 4 divisors (see below), whose sum is σ = 421103520. Its totient is φ = 420487816.

The previous prime is 420795659. The next prime is 420795671. The reversal of 420795667 is 766597024.

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 420795667 - 2³ = 420795659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420795607) 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, 151867 + ... + 154612.

It is an arithmetic number, because the mean of its divisors is an integer number (105275880).

Almost surely, 2^420795667 is an apocalyptic number.

420795667 is a deficient number, since it is larger than the sum of its proper divisors (307853).

420795667 is a wasteful number, since it uses less digits than its factorization.

420795667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307852.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 420795667 is about 20513.3046338224. The cubic root of 420795667 is about 749.3598490237.

The spelling of 420795667 in words is "four hundred twenty million, seven hundred ninety-five thousand, six hundred sixty-seven".