420680688 has 40 divisors (see below), whose sum is σ = 1100524800. Its totient is φ = 138450624.

The previous prime is 420680671. The next prime is 420680707. The reversal of 420680688 is 886086024.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51678 + ... + 59261.

It is an arithmetic number, because the mean of its divisors is an integer number (27513120).

Almost surely, 2^420680688 is an apocalyptic number.

420680688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

420680688 is an abundant number, since it is smaller than the sum of its proper divisors (679844112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420680688 is a wasteful number, since it uses less digits than its factorization.

420680688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111029 (or 111023 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 420680688 is about 20510.5018953706. The cubic root of 420680688 is about 749.2915906411.

The spelling of 420680688 in words is "four hundred twenty million, six hundred eighty thousand, six hundred eighty-eight".