640003002 has 16 divisors (see below), whose sum is σ = 1285502400. Its totient is φ = 212418272.

The previous prime is 640002997. The next prime is 640003003. The reversal of 640003002 is 200300046.

It is not an unprimeable number, because it can be changed into a prime (640003003) 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, 227502 + ... + 230297.

It is an arithmetic number, because the mean of its divisors is an integer number (80343900).

Almost surely, 2^640003002 is an apocalyptic number.

640003002 is an abundant number, since it is smaller than the sum of its proper divisors (645499398).

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

640003002 is a wasteful number, since it uses less digits than its factorization.

640003002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458037.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 640003002 is about 25298.2806135121. The cubic root of 640003002 is about 861.7752234300.

Adding to 640003002 its reverse (200300046), we get a palindrome (840303048).

The spelling of 640003002 in words is "six hundred forty million, three thousand, two".