643025348 has 12 divisors (see below), whose sum is σ = 1286050752. Its totient is φ = 275582280.

The previous prime is 643025333. The next prime is 643025387. The reversal of 643025348 is 843520346.

643025348 is an admirable number.

It is a super-2 number, since 2×643025348² = 826963196341042208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11482568 + ... + 11482623.

It is an arithmetic number, because the mean of its divisors is an integer number (107170896).

Almost surely, 2^643025348 is an apocalyptic number.

It is an amenable number.

643025348 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

643025348 is a wasteful number, since it uses less digits than its factorization.

643025348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22965202 (or 22965200 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 643025348 is about 25357.9444750555. The cubic root of 643025348 is about 863.1296408619.

The spelling of 643025348 in words is "six hundred forty-three million, twenty-five thousand, three hundred forty-eight".