641662848 has 48 divisors (see below), whose sum is σ = 1846455000. Its totient is φ = 213887232.

The previous prime is 641662837. The next prime is 641662867. The reversal of 641662848 is 848266146.

641662848 is a `hidden beast` number, since 6 + 4 + 16 + 628 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×641662848² = 823462421006942208, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277348 + ... + 279651.

Almost surely, 2^641662848 is an apocalyptic number.

It is an amenable number.

641662848 is an abundant number, since it is smaller than the sum of its proper divisors (1204792152).

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

641662848 is a wasteful number, since it uses less digits than its factorization.

641662848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557019 (or 557004 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 641662848 is about 25331.0648808928. The cubic root of 641662848 is about 862.5195841804.

The spelling of 641662848 in words is "six hundred forty-one million, six hundred sixty-two thousand, eight hundred forty-eight".