645210034 has 8 divisors (see below), whose sum is σ = 1106074368. Its totient is φ = 276518580.

The previous prime is 645210023. The next prime is 645210089. The reversal of 645210034 is 430012546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 645209990 and 645210008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23043202 + ... + 23043229.

It is an arithmetic number, because the mean of its divisors is an integer number (138259296).

Almost surely, 2^645210034 is an apocalyptic number.

645210034 is a deficient number, since it is larger than the sum of its proper divisors (460864334).

645210034 is a wasteful number, since it uses less digits than its factorization.

645210034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46086440.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 645210034 is about 25400.9849021647. The cubic root of 645210034 is about 864.1060335472.

The spelling of 645210034 in words is "six hundred forty-five million, two hundred ten thousand, thirty-four".