649584534 has 16 divisors (see below), whose sum is σ = 1299776688. Its totient is φ = 216426912.

The previous prime is 649584527. The next prime is 649584557. The reversal of 649584534 is 435485946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10777 + ... + 37620.

It is an arithmetic number, because the mean of its divisors is an integer number (81236043).

Almost surely, 2^649584534 is an apocalyptic number.

649584534 is an abundant number, since it is smaller than the sum of its proper divisors (650192154).

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

649584534 is a wasteful number, since it uses less digits than its factorization.

649584534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50639.

The product of its digits is 2073600, while the sum is 48.

The square root of 649584534 is about 25486.9483069276. The cubic root of 649584534 is about 866.0545055450.

The spelling of 649584534 in words is "six hundred forty-nine million, five hundred eighty-four thousand, five hundred thirty-four".