648629206 has 4 divisors (see below), whose sum is σ = 972943812. Its totient is φ = 324314602.

The previous prime is 648629161. The next prime is 648629221. The reversal of 648629206 is 602926846.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162157300 + ... + 162157303.

It is an arithmetic number, because the mean of its divisors is an integer number (243235953).

Almost surely, 2^648629206 is an apocalyptic number.

648629206 is a deficient number, since it is larger than the sum of its proper divisors (324314606).

648629206 is a wasteful number, since it uses less digits than its factorization.

648629206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324314605.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 648629206 is about 25468.1998971266. The cubic root of 648629206 is about 865.6297355560.

The spelling of 648629206 in words is "six hundred forty-eight million, six hundred twenty-nine thousand, two hundred six".