641325646 has 16 divisors (see below), whose sum is σ = 1096928784. Its totient is φ = 278584704.

The previous prime is 641325637. The next prime is 641325647. The reversal of 641325646 is 646523146.

It is a super-2 number, since 2×641325646² = 822597168434634632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641325647) 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, 725040 + ... + 725923.

It is an arithmetic number, because the mean of its divisors is an integer number (68558049).

Almost surely, 2^641325646 is an apocalyptic number.

641325646 is a deficient number, since it is larger than the sum of its proper divisors (455603138).

641325646 is a wasteful number, since it uses less digits than its factorization.

641325646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450995.

The product of its digits is 103680, while the sum is 37.

The square root of 641325646 is about 25324.4081075945. The cubic root of 641325646 is about 862.3684693637.

The spelling of 641325646 in words is "six hundred forty-one million, three hundred twenty-five thousand, six hundred forty-six".