420566865 has 8 divisors (see below), whose sum is σ = 672907008. Its totient is φ = 224302320.

The previous prime is 420566837. The next prime is 420566873. The reversal of 420566865 is 568665024.

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

It is not a de Polignac number, because 420566865 - 2⁵ = 420566833 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14018881 + ... + 14018910.

It is an arithmetic number, because the mean of its divisors is an integer number (84113376).

Almost surely, 2^420566865 is an apocalyptic number.

It is an amenable number.

420566865 is a deficient number, since it is larger than the sum of its proper divisors (252340143).

420566865 is a wasteful number, since it uses less digits than its factorization.

420566865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28037799.

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 420566865 is about 20507.7269583930. The cubic root of 420566865 is about 749.2240062775.

The spelling of 420566865 in words is "four hundred twenty million, five hundred sixty-six thousand, eight hundred sixty-five".