649152279 has 16 divisors (see below), whose sum is σ = 978009600. Its totient is φ = 425432088.

The previous prime is 649152263. The next prime is 649152319. The reversal of 649152279 is 972251946.

649152279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 649152279 - 2⁴ = 649152263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649152479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202159 + ... + 205344.

It is an arithmetic number, because the mean of its divisors is an integer number (61125600).

Almost surely, 2^649152279 is an apocalyptic number.

649152279 is a deficient number, since it is larger than the sum of its proper divisors (328857321).

649152279 is a wasteful number, since it uses less digits than its factorization.

649152279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407571 (or 407565 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 649152279 is about 25478.4669672255. The cubic root of 649152279 is about 865.8623624968.

The spelling of 649152279 in words is "six hundred forty-nine million, one hundred fifty-two thousand, two hundred seventy-nine".