420777567 has 12 divisors (see below), whose sum is σ = 694617040. Its totient is φ = 240444288.

The previous prime is 420777563. The next prime is 420777569. The reversal of 420777567 is 765777024.

It is not a de Polignac number, because 420777567 - 2² = 420777563 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 (420777563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3339442 + ... + 3339567.

Almost surely, 2^420777567 is an apocalyptic number.

420777567 is a deficient number, since it is larger than the sum of its proper divisors (273839473).

420777567 is a wasteful number, since it uses less digits than its factorization.

420777567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6679022 (or 6679019 counting only the distinct ones).

The product of its (nonzero) digits is 576240, while the sum is 45.

The square root of 420777567 is about 20512.8634519903. The cubic root of 420777567 is about 749.3491046103.

The spelling of 420777567 in words is "four hundred twenty million, seven hundred seventy-seven thousand, five hundred sixty-seven".