641263848 has 16 divisors (see below), whose sum is σ = 1603159680. Its totient is φ = 213754608.

The previous prime is 641263811. The next prime is 641263849. The reversal of 641263848 is 848362146.

It is a super-2 number, since 2×641263848² = 822438645503534208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (641263849) 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, 13359640 + ... + 13359687.

It is an arithmetic number, because the mean of its divisors is an integer number (100197480).

Almost surely, 2^641263848 is an apocalyptic number.

It is an amenable number.

641263848 is an abundant number, since it is smaller than the sum of its proper divisors (961895832).

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

641263848 is a wasteful number, since it uses less digits than its factorization.

641263848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26719336 (or 26719332 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 641263848 is about 25323.1879509670. The cubic root of 641263848 is about 862.3407692611.

The spelling of 641263848 in words is "six hundred forty-one million, two hundred sixty-three thousand, eight hundred forty-eight".