420506567 has 8 divisors (see below), whose sum is σ = 456160656. Its totient is φ = 385324992.

The previous prime is 420506557. The next prime is 420506573. The reversal of 420506567 is 765605024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420506567 - 2⁴ = 420506551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420506557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116273 + ... + 119834.

It is an arithmetic number, because the mean of its divisors is an integer number (57020082).

Almost surely, 2^420506567 is an apocalyptic number.

420506567 is a deficient number, since it is larger than the sum of its proper divisors (35654089).

420506567 is a wasteful number, since it uses less digits than its factorization.

420506567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236257.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 420506567 is about 20506.2567768962. The cubic root of 420506567 is about 749.1881983619.

The spelling of 420506567 in words is "four hundred twenty million, five hundred six thousand, five hundred sixty-seven".