649241654 has 16 divisors (see below), whose sum is σ = 1016925408. Its totient is φ = 310286592.

The previous prime is 649241641. The next prime is 649241693. The reversal of 649241654 is 456142946.

It is a Curzon number.

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, 73904 + ... + 82220.

It is an arithmetic number, because the mean of its divisors is an integer number (63557838).

Almost surely, 2^649241654 is an apocalyptic number.

649241654 is a deficient number, since it is larger than the sum of its proper divisors (367683754).

649241654 is a wasteful number, since it uses less digits than its factorization.

649241654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10039.

The product of its digits is 207360, while the sum is 41.

The square root of 649241654 is about 25480.2208389174. The cubic root of 649241654 is about 865.9020978562.

The spelling of 649241654 in words is "six hundred forty-nine million, two hundred forty-one thousand, six hundred fifty-four".