649581346 has 8 divisors (see below), whose sum is σ = 977505984. Its totient is φ = 323746020.

The previous prime is 649581337. The next prime is 649581379. The reversal of 649581346 is 643185946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 649581296 and 649581305.

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, 521550 + ... + 522793.

It is an arithmetic number, because the mean of its divisors is an integer number (122188248).

Almost surely, 2^649581346 is an apocalyptic number.

649581346 is a deficient number, since it is larger than the sum of its proper divisors (327924638).

649581346 is a wasteful number, since it uses less digits than its factorization.

649581346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044656.

The product of its digits is 622080, while the sum is 46.

The square root of 649581346 is about 25486.8857650361. The cubic root of 649581346 is about 866.0530887490.

The spelling of 649581346 in words is "six hundred forty-nine million, five hundred eighty-one thousand, three hundred forty-six".