649235166 has 16 divisors (see below), whose sum is σ = 1298726784. Its totient is φ = 216368984.

The previous prime is 649235137. The next prime is 649235177. The reversal of 649235166 is 661532946.

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, 42895 + ... + 56021.

It is an arithmetic number, because the mean of its divisors is an integer number (81170424).

Almost surely, 2^649235166 is an apocalyptic number.

649235166 is an abundant number, since it is smaller than the sum of its proper divisors (649491618).

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

649235166 is a wasteful number, since it uses less digits than its factorization.

649235166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21375.

The product of its digits is 233280, while the sum is 42.

The square root of 649235166 is about 25480.0935241612. The cubic root of 649235166 is about 865.8992134697.

The spelling of 649235166 in words is "six hundred forty-nine million, two hundred thirty-five thousand, one hundred sixty-six".