649255006 has 4 divisors (see below), whose sum is σ = 973882512. Its totient is φ = 324627502.

The previous prime is 649255003. The next prime is 649255043. The reversal of 649255006 is 600552946.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649255003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162313750 + ... + 162313753.

It is an arithmetic number, because the mean of its divisors is an integer number (243470628).

Almost surely, 2^649255006 is an apocalyptic number.

649255006 is a deficient number, since it is larger than the sum of its proper divisors (324627506).

649255006 is a wasteful number, since it uses less digits than its factorization.

649255006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324627505.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 649255006 is about 25480.4828447186. The cubic root of 649255006 is about 865.9080337279.

The spelling of 649255006 in words is "six hundred forty-nine million, two hundred fifty-five thousand, six".