645452002 has 32 divisors (see below), whose sum is σ = 1107691200. Its totient is φ = 279609408.

The previous prime is 645451999. The next prime is 645452029. The reversal of 645452002 is 200254546.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47853 + ... + 59839.

It is an arithmetic number, because the mean of its divisors is an integer number (34615350).

Almost surely, 2^645452002 is an apocalyptic number.

645452002 is a deficient number, since it is larger than the sum of its proper divisors (462239198).

645452002 is a wasteful number, since it uses less digits than its factorization.

645452002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12130.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 645452002 is about 25405.7474206133. The cubic root of 645452002 is about 864.2140396568.

The spelling of 645452002 in words is "six hundred forty-five million, four hundred fifty-two thousand, two".