649576434 has 32 divisors (see below), whose sum is σ = 1422033984. Its totient is φ = 196591680.

The previous prime is 649576381. The next prime is 649576439. The reversal of 649576434 is 434675946.

It is not an unprimeable number, because it can be changed into a prime (649576439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63504 + ... + 73019.

It is an arithmetic number, because the mean of its divisors is an integer number (44438562).

Almost surely, 2^649576434 is an apocalyptic number.

649576434 is an abundant number, since it is smaller than the sum of its proper divisors (772457550).

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

649576434 is a wasteful number, since it uses less digits than its factorization.

649576434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136602.

The product of its digits is 2177280, while the sum is 48.

The square root of 649576434 is about 25486.7894015704. The cubic root of 649576434 is about 866.0509057720.

The spelling of 649576434 in words is "six hundred forty-nine million, five hundred seventy-six thousand, four hundred thirty-four".