649372298 has 4 divisors (see below), whose sum is σ = 974058450. Its totient is φ = 324686148.

The previous prime is 649372279. The next prime is 649372301. The reversal of 649372298 is 892273946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 338449609 + 310922689 = 18397^2 + 17633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162343073 + ... + 162343076.

Almost surely, 2^649372298 is an apocalyptic number.

649372298 is a deficient number, since it is larger than the sum of its proper divisors (324686152).

649372298 is a wasteful number, since it uses less digits than its factorization.

649372298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324686151.

The product of its digits is 1306368, while the sum is 50.

The square root of 649372298 is about 25482.7843455145. The cubic root of 649372298 is about 865.9601744989.

The spelling of 649372298 in words is "six hundred forty-nine million, three hundred seventy-two thousand, two hundred ninety-eight".