428670663 has 8 divisors (see below), whose sum is σ = 591270000. Its totient is φ = 275925888.

The previous prime is 428670631. The next prime is 428670667. The reversal of 428670663 is 366076824.

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

It is not a de Polignac number, because 428670663 - 2⁵ = 428670631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428670667) 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, 2463538 + ... + 2463711.

It is an arithmetic number, because the mean of its divisors is an integer number (73908750).

Almost surely, 2^428670663 is an apocalyptic number.

428670663 is a deficient number, since it is larger than the sum of its proper divisors (162599337).

428670663 is a wasteful number, since it uses less digits than its factorization.

428670663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927281.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 428670663 is about 20704.3633806983. The cubic root of 428670663 is about 754.0056280611.

The spelling of 428670663 in words is "four hundred twenty-eight million, six hundred seventy thousand, six hundred sixty-three".