420506065 has 16 divisors (see below), whose sum is σ = 577445760. Its totient is φ = 287971200.

The previous prime is 420506063. The next prime is 420506069. The reversal of 420506065 is 560605024.

It is not a de Polignac number, because 420506065 - 2¹ = 420506063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420506063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20890 + ... + 35740.

It is an arithmetic number, because the mean of its divisors is an integer number (36090360).

Almost surely, 2^420506065 is an apocalyptic number.

It is an amenable number.

420506065 is a deficient number, since it is larger than the sum of its proper divisors (156939695).

420506065 is a wasteful number, since it uses less digits than its factorization.

420506065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15672.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 420506065 is about 20506.2445367259. The cubic root of 420506065 is about 749.1879002353.

The spelling of 420506065 in words is "four hundred twenty million, five hundred six thousand, sixty-five".