645299348 has 12 divisors (see below), whose sum is σ = 1165702272. Its totient is φ = 312241560.

The previous prime is 645299321. The next prime is 645299357. The reversal of 645299348 is 843992546.

It is a super-2 number, since 2×645299348² = 832822497058450208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645299296 and 645299305.

It is a congruent number.

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, 2601890 + ... + 2602137.

It is an arithmetic number, because the mean of its divisors is an integer number (97141856).

Almost surely, 2^645299348 is an apocalyptic number.

It is an amenable number.

645299348 is a deficient number, since it is larger than the sum of its proper divisors (520402924).

645299348 is a wasteful number, since it uses less digits than its factorization.

645299348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204062 (or 5204060 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 645299348 is about 25402.7429227633. The cubic root of 645299348 is about 864.1459033578.

The spelling of 645299348 in words is "six hundred forty-five million, two hundred ninety-nine thousand, three hundred forty-eight".