641069460 has 144 divisors (see below), whose sum is σ = 2024934912. Its totient is φ = 163987200.

The previous prime is 641069459. The next prime is 641069509. The reversal of 641069460 is 64960146.

641069460 is a `hidden beast` number, since 641 + 0 + 6 + 9 + 4 + 6 + 0 = 666.

641069460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 730542 + ... + 731418.

It is an arithmetic number, because the mean of its divisors is an integer number (14062048).

Almost surely, 2^641069460 is an apocalyptic number.

641069460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641069460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012467456).

641069460 is an abundant number, since it is smaller than the sum of its proper divisors (1383865452).

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

641069460 is a wasteful number, since it uses less digits than its factorization.

641069460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 641069460 is about 25319.3495177108. The cubic root of 641069460 is about 862.2536259120.

The spelling of 641069460 in words is "six hundred forty-one million, sixty-nine thousand, four hundred sixty".