649902298 has 8 divisors (see below), whose sum is σ = 977988960. Its totient is φ = 323905980.

The previous prime is 649902241. The next prime is 649902313. The reversal of 649902298 is 892209946.

It is a happy number.

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

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, 521808 + ... + 523051.

It is an arithmetic number, because the mean of its divisors is an integer number (122248620).

Almost surely, 2^649902298 is an apocalyptic number.

649902298 is a deficient number, since it is larger than the sum of its proper divisors (328086662).

649902298 is a wasteful number, since it uses less digits than its factorization.

649902298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045172.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 649902298 is about 25493.1814020926. The cubic root of 649902298 is about 866.1957014774.

The spelling of 649902298 in words is "six hundred forty-nine million, nine hundred two thousand, two hundred ninety-eight".