643072602 has 16 divisors (see below), whose sum is σ = 1286605152. Its totient is φ = 214280880.

The previous prime is 643072601. The next prime is 643072603. The reversal of 643072602 is 206270346.

It is an interprime number because it is at equal distance from previous prime (643072601) and next prime (643072603).

It is a self number, because there is not a number n which added to its sum of digits gives 643072602.

It is not an unprimeable number, because it can be changed into a prime (643072601) 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, 577 + ... + 35867.

It is an arithmetic number, because the mean of its divisors is an integer number (80412822).

Almost surely, 2^643072602 is an apocalyptic number.

643072602 is an abundant number, since it is smaller than the sum of its proper divisors (643532550).

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

643072602 is a wasteful number, since it uses less digits than its factorization.

643072602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38333.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 643072602 is about 25358.8761974974. The cubic root of 643072602 is about 863.1507832783.

The spelling of 643072602 in words is "six hundred forty-three million, seventy-two thousand, six hundred two".