668532070 has 32 divisors (see below), whose sum is σ = 1246583520. Its totient is φ = 257832960.

The previous prime is 668532023. The next prime is 668532077. The reversal of 668532070 is 70235866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668532077) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 315334 + ... + 317446.

It is an arithmetic number, because the mean of its divisors is an integer number (38955735).

Almost surely, 2^668532070 is an apocalyptic number.

668532070 is a deficient number, since it is larger than the sum of its proper divisors (578051450).

668532070 is a wasteful number, since it uses less digits than its factorization.

668532070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 668532070 is about 25855.9871209745. The cubic root of 668532070 is about 874.3944959149.

The spelling of 668532070 in words is "six hundred sixty-eight million, five hundred thirty-two thousand, seventy".