630154986 has 16 divisors (see below), whose sum is σ = 1260715104. Its totient is φ = 209984144.

The previous prime is 630154937. The next prime is 630155023. The reversal of 630154986 is 689451036.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5656 + ... + 35948.

It is an arithmetic number, because the mean of its divisors is an integer number (78794694).

Almost surely, 2^630154986 is an apocalyptic number.

630154986 is an abundant number, since it is smaller than the sum of its proper divisors (630560118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630154986 is a wasteful number, since it uses less digits than its factorization.

630154986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33765.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 630154986 is about 25102.8880011842. Note that the first 3 decimals coincide. The cubic root of 630154986 is about 857.3321806638.

The spelling of 630154986 in words is "six hundred thirty million, one hundred fifty-four thousand, nine hundred eighty-six".