421687870 has 32 divisors (see below), whose sum is σ = 782623296. Its totient is φ = 163488000.

The previous prime is 421687867. The next prime is 421687909. The reversal of 421687870 is 78786124.

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, 61095 + ... + 67645.

It is an arithmetic number, because the mean of its divisors is an integer number (24456978).

Almost surely, 2^421687870 is an apocalyptic number.

421687870 is a deficient number, since it is larger than the sum of its proper divisors (360935426).

421687870 is a wasteful number, since it uses less digits than its factorization.

421687870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6756.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 421687870 is about 20535.0400535280. The cubic root of 421687870 is about 749.8890917481.

The spelling of 421687870 in words is "four hundred twenty-one million, six hundred eighty-seven thousand, eight hundred seventy".