649787946 has 8 divisors (see below), whose sum is σ = 1299575904. Its totient is φ = 216595980.

The previous prime is 649787933. The next prime is 649787951.

649787946 is nontrivially palindromic in base 10.

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

649787946 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 649787946.

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 3 ways as a sum of consecutive naturals, for example, 54148990 + ... + 54149001.

It is an arithmetic number, because the mean of its divisors is an integer number (162446988).

Almost surely, 2^649787946 is an apocalyptic number.

649787946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

649787946 is a wasteful number, since it uses less digits than its factorization.

649787946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108297996.

The product of its digits is 18289152, while the sum is 60.

The square root of 649787946 is about 25490.9385076344. The cubic root of 649787946 is about 866.1448953684.

The spelling of 649787946 in words is "six hundred forty-nine million, seven hundred eighty-seven thousand, nine hundred forty-six".