649655336 has 32 divisors (see below), whose sum is σ = 1336214880. Its totient is φ = 293659200.

The previous prime is 649655329. The next prime is 649655339. The reversal of 649655336 is 633556946.

It is not an unprimeable number, because it can be changed into a prime (649655339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4466 + ... + 36321.

It is an arithmetic number, because the mean of its divisors is an integer number (41756715).

Almost surely, 2^649655336 is an apocalyptic number.

It is an amenable number.

649655336 is an abundant number, since it is smaller than the sum of its proper divisors (686559544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649655336 is a wasteful number, since it uses less digits than its factorization.

649655336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40985 (or 40981 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 47.

The square root of 649655336 is about 25488.3372545170. The cubic root of 649655336 is about 866.0859698427.

The spelling of 649655336 in words is "six hundred forty-nine million, six hundred fifty-five thousand, three hundred thirty-six".