421646676 has 24 divisors (see below), whose sum is σ = 1073282784. Its totient is φ = 127771680.

The previous prime is 421646669. The next prime is 421646677. The reversal of 421646676 is 676646124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421646677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597015 + ... + 1597278.

It is an arithmetic number, because the mean of its divisors is an integer number (44720116).

Almost surely, 2^421646676 is an apocalyptic number.

It is an amenable number.

421646676 is an abundant number, since it is smaller than the sum of its proper divisors (651636108).

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

421646676 is a wasteful number, since it uses less digits than its factorization.

421646676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194311 (or 3194309 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 421646676 is about 20534.0370117520. The cubic root of 421646676 is about 749.8646724723.

The spelling of 421646676 in words is "four hundred twenty-one million, six hundred forty-six thousand, six hundred seventy-six".