420532647 has 16 divisors (see below), whose sum is σ = 574979328. Its totient is φ = 273248640.

The previous prime is 420532627. The next prime is 420532649. The reversal of 420532647 is 746235024.

It is not a de Polignac number, because 420532647 - 2⁶ = 420532583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420532649) 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 15 ways as a sum of consecutive naturals, for example, 61647 + ... + 68127.

It is an arithmetic number, because the mean of its divisors is an integer number (35936208).

Almost surely, 2^420532647 is an apocalyptic number.

420532647 is a deficient number, since it is larger than the sum of its proper divisors (154446681).

420532647 is a wasteful number, since it uses less digits than its factorization.

420532647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7030.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 420532647 is about 20506.8926705145. The cubic root of 420532647 is about 749.2036863676.

The spelling of 420532647 in words is "four hundred twenty million, five hundred thirty-two thousand, six hundred forty-seven".