649132898 has 8 divisors (see below), whose sum is σ = 976081260. Its totient is φ = 323772480.

The previous prime is 649132877. The next prime is 649132909. The reversal of 649132898 is 898231946.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 588402049 + 60730849 = 24257^2 + 7793^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395963 + ... + 397598.

Almost surely, 2^649132898 is an apocalyptic number.

649132898 is a deficient number, since it is larger than the sum of its proper divisors (326948362).

649132898 is a wasteful number, since it uses less digits than its factorization.

649132898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793972.

The product of its digits is 746496, while the sum is 50.

The square root of 649132898 is about 25478.0866236066. The cubic root of 649132898 is about 865.8537453890.

The spelling of 649132898 in words is "six hundred forty-nine million, one hundred thirty-two thousand, eight hundred ninety-eight".