645082792 has 16 divisors (see below), whose sum is σ = 1212904800. Its totient is φ = 321641520.

The previous prime is 645082759. The next prime is 645082793. The reversal of 645082792 is 297280546.

645082792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×645082792² = 832263617069030528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (645082793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109434 + ... + 115177.

It is an arithmetic number, because the mean of its divisors is an integer number (75806550).

Almost surely, 2^645082792 is an apocalyptic number.

It is an amenable number.

645082792 is a deficient number, since it is larger than the sum of its proper divisors (567822008).

645082792 is a wasteful number, since it uses less digits than its factorization.

645082792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224976 (or 224972 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 645082792 is about 25398.4801120067. The cubic root of 645082792 is about 864.0492263048.

The spelling of 645082792 in words is "six hundred forty-five million, eighty-two thousand, seven hundred ninety-two".