663420351 has 8 divisors (see below), whose sum is σ = 964975104. Its totient is φ = 402072920.

The previous prime is 663420343. The next prime is 663420377. The reversal of 663420351 is 153024366.

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 663420351 - 2³ = 663420343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663420301) 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, 10051791 + ... + 10051856.

It is an arithmetic number, because the mean of its divisors is an integer number (120621888).

Almost surely, 2^663420351 is an apocalyptic number.

663420351 is a deficient number, since it is larger than the sum of its proper divisors (301554753).

663420351 is a wasteful number, since it uses less digits than its factorization.

663420351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20103661.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 663420351 is about 25756.9476258349. The cubic root of 663420351 is about 872.1601979441.

The spelling of 663420351 in words is "six hundred sixty-three million, four hundred twenty thousand, three hundred fifty-one".