641602176 has 64 divisors (see below), whose sum is σ = 1711005120. Its totient is φ = 213020672.

The previous prime is 641602147. The next prime is 641602189. The reversal of 641602176 is 671206146.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97816 + ... + 104168.

It is an arithmetic number, because the mean of its divisors is an integer number (26734455).

Almost surely, 2^641602176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641602176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855502560).

641602176 is an abundant number, since it is smaller than the sum of its proper divisors (1069402944).

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

641602176 is a wasteful number, since it uses less digits than its factorization.

641602176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633 (or 6621 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 641602176 is about 25329.8672716617. The cubic root of 641602176 is about 862.4923983367.

The spelling of 641602176 in words is "six hundred forty-one million, six hundred two thousand, one hundred seventy-six".