649360269 has 12 divisors (see below), whose sum is σ = 943207200. Its totient is φ = 430487304.

The previous prime is 649360267. The next prime is 649360279. The reversal of 649360269 is 962063946.

It is not a de Polignac number, because 649360269 - 2¹ = 649360267 is a prime.

It is a super-2 number, since 2×649360269² = 843337517911504722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649360267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199929 + ... + 203150.

It is an arithmetic number, because the mean of its divisors is an integer number (78600600).

Almost surely, 2^649360269 is an apocalyptic number.

It is an amenable number.

649360269 is a deficient number, since it is larger than the sum of its proper divisors (293846931).

649360269 is a wasteful number, since it uses less digits than its factorization.

649360269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403264 (or 403261 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 649360269 is about 25482.5483223323. The cubic root of 649360269 is about 865.9548274382.

The spelling of 649360269 in words is "six hundred forty-nine million, three hundred sixty thousand, two hundred sixty-nine".