640141363 has 8 divisors (see below), whose sum is σ = 654131520. Its totient is φ = 626166720.

The previous prime is 640141349. The next prime is 640141391. The reversal of 640141363 is 363141046.

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

It is a cyclic number.

It is not a de Polignac number, because 640141363 - 2¹⁷ = 640010291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640141343) 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, 126343 + ... + 131311.

It is an arithmetic number, because the mean of its divisors is an integer number (81766440).

Almost surely, 2^640141363 is an apocalyptic number.

640141363 is a deficient number, since it is larger than the sum of its proper divisors (13990157).

640141363 is a wasteful number, since it uses less digits than its factorization.

640141363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7757.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 640141363 is about 25301.0150586889. The cubic root of 640141363 is about 861.8373207899.

The spelling of 640141363 in words is "six hundred forty million, one hundred forty-one thousand, three hundred sixty-three".