641582262 has 96 divisors (see below), whose sum is σ = 1510778880. Its totient is φ = 201592800.

The previous prime is 641582243. The next prime is 641582267. The reversal of 641582262 is 262285146.

It is a happy number.

641582262 is a `hidden beast` number, since 641 + 5 + 8 + 2 + 2 + 6 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641582267) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6228903 + ... + 6229005.

It is an arithmetic number, because the mean of its divisors is an integer number (15737280).

Almost surely, 2^641582262 is an apocalyptic number.

641582262 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 641582262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (755389440).

641582262 is an abundant number, since it is smaller than the sum of its proper divisors (869196618).

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

641582262 is a wasteful number, since it uses less digits than its factorization.

641582262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 200 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 641582262 is about 25329.4741753555. The cubic root of 641582262 is about 862.4834749197.

The spelling of 641582262 in words is "six hundred forty-one million, five hundred eighty-two thousand, two hundred sixty-two".