649608472 has 16 divisors (see below), whose sum is σ = 1257307200. Its totient is φ = 314326560.

The previous prime is 649608451. The next prime is 649608529. The reversal of 649608472 is 274806946.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309447 + ... + 1309942.

It is an arithmetic number, because the mean of its divisors is an integer number (78581700).

Almost surely, 2^649608472 is an apocalyptic number.

649608472 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

649608472 is a deficient number, since it is larger than the sum of its proper divisors (607698728).

649608472 is a wasteful number, since it uses less digits than its factorization.

649608472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619426 (or 2619422 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 649608472 is about 25487.4179155127. The cubic root of 649608472 is about 866.0651438105.

The spelling of 649608472 in words is "six hundred forty-nine million, six hundred eight thousand, four hundred seventy-two".