421766616 has 32 divisors (see below), whose sum is σ = 1056844800. Its totient is φ = 140265120.

The previous prime is 421766603. The next prime is 421766623. The reversal of 421766616 is 616667124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9480 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (33026400).

Almost surely, 2^421766616 is an apocalyptic number.

It is an amenable number.

421766616 is an abundant number, since it is smaller than the sum of its proper divisors (635078184).

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

421766616 is a wasteful number, since it uses less digits than its factorization.

421766616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40479 (or 40475 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 421766616 is about 20536.9573208886. The cubic root of 421766616 is about 749.9357669434.

The spelling of 421766616 in words is "four hundred twenty-one million, seven hundred sixty-six thousand, six hundred sixteen".