649453855 has 8 divisors (see below), whose sum is σ = 779883264. Its totient is φ = 519204000.

The previous prime is 649453841. The next prime is 649453913. The reversal of 649453855 is 558354946.

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

It is not a de Polignac number, because 649453855 - 2⁵ = 649453823 is a prime.

It is a super-2 number, since 2×649453855² = 843580619548722050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649453799 and 649453808.

It is a congruent 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, 36796 + ... + 51505.

It is an arithmetic number, because the mean of its divisors is an integer number (97485408).

Almost surely, 2^649453855 is an apocalyptic number.

649453855 is a deficient number, since it is larger than the sum of its proper divisors (130429409).

649453855 is a wasteful number, since it uses less digits than its factorization.

649453855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89777.

The product of its digits is 2592000, while the sum is 49.

The square root of 649453855 is about 25484.3845324936. The cubic root of 649453855 is about 865.9964259978.

The spelling of 649453855 in words is "six hundred forty-nine million, four hundred fifty-three thousand, eight hundred fifty-five".