641317084 has 12 divisors (see below), whose sum is σ = 1126574064. Its totient is φ = 319438784.

The previous prime is 641317081. The next prime is 641317091. The reversal of 641317084 is 480713146.

It is a happy number.

It is a super-2 number, since 2×641317084² = 822575204460526112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641317081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303757 + ... + 305860.

It is an arithmetic number, because the mean of its divisors is an integer number (93881172).

Almost surely, 2^641317084 is an apocalyptic number.

It is an amenable number.

641317084 is a deficient number, since it is larger than the sum of its proper divisors (485256980).

641317084 is a wasteful number, since it uses less digits than its factorization.

641317084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609884 (or 609882 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 641317084 is about 25324.2390606312. The cubic root of 641317084 is about 862.3646316713.

The spelling of 641317084 in words is "six hundred forty-one million, three hundred seventeen thousand, eighty-four".