421568827 has 8 divisors (see below), whose sum is σ = 444648960. Its totient is φ = 398577960.

The previous prime is 421568821. The next prime is 421568831. The reversal of 421568827 is 728865124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421568827 - 2⁷ = 421568699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421568821) 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, 12499 + ... + 31612.

It is an arithmetic number, because the mean of its divisors is an integer number (55581120).

Almost surely, 2^421568827 is an apocalyptic number.

421568827 is a deficient number, since it is larger than the sum of its proper divisors (23080133).

421568827 is a wasteful number, since it uses less digits than its factorization.

421568827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44633.

The product of its digits is 215040, while the sum is 43.

The square root of 421568827 is about 20532.1413155082. The cubic root of 421568827 is about 749.8185202385.

The spelling of 421568827 in words is "four hundred twenty-one million, five hundred sixty-eight thousand, eight hundred twenty-seven".