645170414 has 16 divisors (see below), whose sum is σ = 1114718208. Its totient is φ = 274323672.

The previous prime is 645170399. The next prime is 645170467. The reversal of 645170414 is 414071546.

645170414 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179654 + ... + 183209.

It is an arithmetic number, because the mean of its divisors is an integer number (69669888).

Almost surely, 2^645170414 is an apocalyptic number.

645170414 is a deficient number, since it is larger than the sum of its proper divisors (469547794).

645170414 is a wasteful number, since it uses less digits than its factorization.

645170414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362999.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 645170414 is about 25400.2049991727. The cubic root of 645170414 is about 864.0883459830.

The spelling of 645170414 in words is "six hundred forty-five million, one hundred seventy thousand, four hundred fourteen".