649027080 has 320 divisors, whose sum is σ = 2475950400. Its totient is φ = 151165440.

The previous prime is 649027073. The next prime is 649027091. The reversal of 649027080 is 80720946.

649027080 is a `hidden beast` number, since 649 + 0 + 2 + 7 + 0 + 8 + 0 = 666.

649027080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 799875 + ... + 800685.

It is an arithmetic number, because the mean of its divisors is an integer number (7737345).

Almost surely, 2^649027080 is an apocalyptic number.

649027080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649027080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237975200).

649027080 is an abundant number, since it is smaller than the sum of its proper divisors (1826923320).

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

649027080 is a wasteful number, since it uses less digits than its factorization.

649027080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 649027080 is about 25476.0098916608. The cubic root of 649027080 is about 865.8066939603.

The spelling of 649027080 in words is "six hundred forty-nine million, twenty-seven thousand, eighty".