641752410 has 64 divisors (see below), whose sum is σ = 1661546880. Its totient is φ = 157697280.

The previous prime is 641752409. The next prime is 641752439. The reversal of 641752410 is 14257146.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315276 + ... + 317304.

It is an arithmetic number, because the mean of its divisors is an integer number (25961670).

Almost surely, 2^641752410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641752410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830773440).

641752410 is an abundant number, since it is smaller than the sum of its proper divisors (1019794470).

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

641752410 is a wasteful number, since it uses less digits than its factorization.

641752410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 641752410 is about 25332.8326485610. The cubic root of 641752410 is about 862.5597118920.

The spelling of 641752410 in words is "six hundred forty-one million, seven hundred fifty-two thousand, four hundred ten".