645161362 has 8 divisors (see below), whose sum is σ = 1009817856. Its totient is φ = 308555412.

The previous prime is 645161333. The next prime is 645161393. The reversal of 645161362 is 263161546.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7012578 + ... + 7012669.

It is an arithmetic number, because the mean of its divisors is an integer number (126227232).

Almost surely, 2^645161362 is an apocalyptic number.

645161362 is a deficient number, since it is larger than the sum of its proper divisors (364656494).

645161362 is a wasteful number, since it uses less digits than its factorization.

645161362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14025272.

The product of its digits is 25920, while the sum is 34.

The square root of 645161362 is about 25400.0268110095. The cubic root of 645161362 is about 864.0843047952.

The spelling of 645161362 in words is "six hundred forty-five million, one hundred sixty-one thousand, three hundred sixty-two".