646325326 has 4 divisors (see below), whose sum is σ = 969487992. Its totient is φ = 323162662.

The previous prime is 646325279. The next prime is 646325327. The reversal of 646325326 is 623523646.

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 (646325327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161581330 + ... + 161581333.

It is an arithmetic number, because the mean of its divisors is an integer number (242371998).

Almost surely, 2^646325326 is an apocalyptic number.

646325326 is a deficient number, since it is larger than the sum of its proper divisors (323162666).

646325326 is a wasteful number, since it uses less digits than its factorization.

646325326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323162665.

The product of its digits is 155520, while the sum is 37.

The square root of 646325326 is about 25422.9291388699. The cubic root of 646325326 is about 864.6036367750.

The spelling of 646325326 in words is "six hundred forty-six million, three hundred twenty-five thousand, three hundred twenty-six".