649567776 has 96 divisors (see below), whose sum is σ = 2003254848. Its totient is φ = 181693440.

The previous prime is 649567727. The next prime is 649567813. The reversal of 649567776 is 677765946.

649567776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9931 + ... + 37386.

It is an arithmetic number, because the mean of its divisors is an integer number (20867238).

Almost surely, 2^649567776 is an apocalyptic number.

649567776 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

649567776 is an abundant number, since it is smaller than the sum of its proper divisors (1353687072).

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

649567776 is a wasteful number, since it uses less digits than its factorization.

649567776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47354 (or 47346 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 57.

The square root of 649567776 is about 25486.6195483042. The cubic root of 649567776 is about 866.0470579815.

The spelling of 649567776 in words is "six hundred forty-nine million, five hundred sixty-seven thousand, seven hundred seventy-six".