640060041 has 8 divisors (see below), whose sum is σ = 853603744. Its totient is φ = 426611520.

The previous prime is 640060021. The next prime is 640060063. The reversal of 640060041 is 140060046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 640060041 - 2⁶ = 640059977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640060021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6256 + ... + 36321.

It is an arithmetic number, because the mean of its divisors is an integer number (106700468).

Almost surely, 2^640060041 is an apocalyptic number.

It is an amenable number.

640060041 is a deficient number, since it is larger than the sum of its proper divisors (213543703).

640060041 is a wasteful number, since it uses less digits than its factorization.

640060041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47591.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 640060041 is about 25299.4079179731. The cubic root of 640060041 is about 861.8008240062.

The spelling of 640060041 in words is "six hundred forty million, sixty thousand, forty-one".