666467670 has 32 divisors (see below), whose sum is σ = 1744934400. Its totient is φ = 161567840.

The previous prime is 666467663. The next prime is 666467671. The reversal of 666467670 is 76764666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666467671) 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, 1009470 + ... + 1010129.

It is an arithmetic number, because the mean of its divisors is an integer number (54529200).

Almost surely, 2^666467670 is an apocalyptic number.

666467670 is an abundant number, since it is smaller than the sum of its proper divisors (1078466730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666467670 is a wasteful number, since it uses less digits than its factorization.

666467670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019620.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The square root of 666467670 is about 25816.0351332268. The cubic root of 666467670 is about 873.4935362862.

The spelling of 666467670 in words is "six hundred sixty-six million, four hundred sixty-seven thousand, six hundred seventy".