649073634 has 32 divisors (see below), whose sum is σ = 1499466816. Its totient is φ = 185118720.

The previous prime is 649073627. The next prime is 649073671. The reversal of 649073634 is 436370946.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288127 + ... + 290370.

It is an arithmetic number, because the mean of its divisors is an integer number (46858338).

Almost surely, 2^649073634 is an apocalyptic number.

649073634 is an abundant number, since it is smaller than the sum of its proper divisors (850393182).

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

649073634 is a wasteful number, since it uses less digits than its factorization.

649073634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578530.

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 649073634 is about 25476.9235583891. The cubic root of 649073634 is about 865.8273945867.

The spelling of 649073634 in words is "six hundred forty-nine million, seventy-three thousand, six hundred thirty-four".