640054003 has 2 divisors, whose sum is σ = 640054004. Its totient is φ = 640054002.

The previous prime is 640054001. The next prime is 640054021. The reversal of 640054003 is 300450046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 640054003 - 2¹ = 640054001 is a prime.

Together with 640054001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (640054001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320027001 + 320027002.

It is an arithmetic number, because the mean of its divisors is an integer number (320027002).

Almost surely, 2^640054003 is an apocalyptic number.

640054003 is a deficient number, since it is larger than the sum of its proper divisors (1).

640054003 is an equidigital number, since it uses as much as digits as its factorization.

640054003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 640054003 is about 25299.2885868358. The cubic root of 640054003 is about 861.7981140678.

The spelling of 640054003 in words is "six hundred forty million, fifty-four thousand, three".