420763563 has 24 divisors (see below), whose sum is σ = 665832960. Its totient is φ = 253926960.

The previous prime is 420763547. The next prime is 420763591. The reversal of 420763563 is 365367024.

420763563 is a `hidden beast` number, since 4 + 20 + 76 + 3 + 563 = 666.

It is not a de Polignac number, because 420763563 - 2⁴ = 420763547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420763363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14770 + ... + 32552.

It is an arithmetic number, because the mean of its divisors is an integer number (27743040).

Almost surely, 2^420763563 is an apocalyptic number.

420763563 is a deficient number, since it is larger than the sum of its proper divisors (245069397).

420763563 is a wasteful number, since it uses less digits than its factorization.

420763563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18039 (or 18036 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 420763563 is about 20512.5221023647. The cubic root of 420763563 is about 749.3407914285.

The spelling of 420763563 in words is "four hundred twenty million, seven hundred sixty-three thousand, five hundred sixty-three".