420666755 has 16 divisors (see below), whose sum is σ = 518192640. Its totient is φ = 327712992.

The previous prime is 420666739. The next prime is 420666767. The reversal of 420666755 is 557666024.

420666755 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 420666755 - 2⁴ = 420666739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24902 + ... + 38228.

It is an arithmetic number, because the mean of its divisors is an integer number (32387040).

Almost surely, 2^420666755 is an apocalyptic number.

420666755 is a deficient number, since it is larger than the sum of its proper divisors (97525885).

420666755 is a wasteful number, since it uses less digits than its factorization.

420666755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13498.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 420666755 is about 20510.1622372911. The cubic root of 420666755 is about 749.2833183376.

The spelling of 420666755 in words is "four hundred twenty million, six hundred sixty-six thousand, seven hundred fifty-five".