649847090 has 8 divisors (see below), whose sum is σ = 1169724780. Its totient is φ = 259938832.

The previous prime is 649847087. The next prime is 649847119. The reversal of 649847090 is 90748946.

It can be written as a sum of positive squares in 2 ways, for example, as 642977449 + 6869641 = 25357^2 + 2621^2 .

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

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, 32492345 + ... + 32492364.

Almost surely, 2^649847090 is an apocalyptic number.

649847090 is a deficient number, since it is larger than the sum of its proper divisors (519877690).

649847090 is a wasteful number, since it uses less digits than its factorization.

649847090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64984716.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 649847090 is about 25492.0985797560. The cubic root of 649847090 is about 866.1711735411.

The spelling of 649847090 in words is "six hundred forty-nine million, eight hundred forty-seven thousand, ninety".