649066260 has 48 divisors (see below), whose sum is σ = 1828987776. Its totient is φ = 171979392.

The previous prime is 649066207. The next prime is 649066267. The reversal of 649066260 is 62660946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649066267) 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, 25032 + ... + 43871.

It is an arithmetic number, because the mean of its divisors is an integer number (38103912).

Almost surely, 2^649066260 is an apocalyptic number.

649066260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649066260 is an abundant number, since it is smaller than the sum of its proper divisors (1179921516).

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

649066260 is a wasteful number, since it uses less digits than its factorization.

649066260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69072 (or 69070 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 649066260 is about 25476.7788387779. The cubic root of 649066260 is about 865.8241157417.

The spelling of 649066260 in words is "six hundred forty-nine million, sixty-six thousand, two hundred sixty".