664042102 has 16 divisors (see below), whose sum is σ = 1002929040. Its totient is φ = 329740768.

The previous prime is 664042097. The next prime is 664042111. The reversal of 664042102 is 201240466.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 184908 + ... + 188464.

It is an arithmetic number, because the mean of its divisors is an integer number (62683065).

Almost surely, 2^664042102 is an apocalyptic number.

664042102 is a deficient number, since it is larger than the sum of its proper divisors (338886938).

664042102 is a wasteful number, since it uses less digits than its factorization.

664042102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 664042102 is about 25769.0143777367. The cubic root of 664042102 is about 872.4325728470.

Adding to 664042102 its reverse (201240466), we get a palindrome (865282568).

The spelling of 664042102 in words is "six hundred sixty-four million, forty-two thousand, one hundred two".