3251238666 has 16 divisors (see below), whose sum is σ = 7002668064. Its totient is φ = 1000381104.

The previous prime is 3251238647. The next prime is 3251238667. The reversal of 3251238666 is 6668321523.

3251238666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3251238667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20841196 + ... + 20841351.

It is an arithmetic number, because the mean of its divisors is an integer number (437666754).

Almost surely, 2^3251238666 is an apocalyptic number.

3251238666 is an abundant number, since it is smaller than the sum of its proper divisors (3751429398).

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

3251238666 is a wasteful number, since it uses less digits than its factorization.

3251238666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41682565.

The product of its digits is 311040, while the sum is 42.

The square root of 3251238666 is about 57019.6340395131. The cubic root of 3251238666 is about 1481.4361920019.

The spelling of 3251238666 in words is "three billion, two hundred fifty-one million, two hundred thirty-eight thousand, six hundred sixty-six".