421336686 has 32 divisors (see below), whose sum is σ = 893380608. Its totient is φ = 132239520.

The previous prime is 421336673. The next prime is 421336691. The reversal of 421336686 is 686633124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23730 + ... + 37493.

It is an arithmetic number, because the mean of its divisors is an integer number (27918144).

Almost surely, 2^421336686 is an apocalyptic number.

421336686 is an abundant number, since it is smaller than the sum of its proper divisors (472043922).

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

421336686 is a wasteful number, since it uses less digits than its factorization.

421336686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61296.

The product of its digits is 124416, while the sum is 39.

The square root of 421336686 is about 20526.4874247885. The cubic root of 421336686 is about 749.6808633328.

The spelling of 421336686 in words is "four hundred twenty-one million, three hundred thirty-six thousand, six hundred eighty-six".