645103034 has 16 divisors (see below), whose sum is σ = 1013472000. Its totient is φ = 307383120.

The previous prime is 645103027. The next prime is 645103049. The reversal of 645103034 is 430301546.

It is a junction number, because it is equal to n+sod(n) for n = 645102994 and 645103012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13409 + ... + 38340.

It is an arithmetic number, because the mean of its divisors is an integer number (63342000).

Almost surely, 2^645103034 is an apocalyptic number.

645103034 is a deficient number, since it is larger than the sum of its proper divisors (368368966).

645103034 is a wasteful number, since it uses less digits than its factorization.

645103034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52045.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 645103034 is about 25398.8785972924. The cubic root of 645103034 is about 864.0582638535.

The spelling of 645103034 in words is "six hundred forty-five million, one hundred three thousand, thirty-four".