66167668 has 24 divisors (see below), whose sum is σ = 132941312. Its totient is φ = 28227744.

The previous prime is 66167663. The next prime is 66167693. The reversal of 66167668 is 86676166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66167663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946 + ... + 11542.

Almost surely, 2^66167668 is an apocalyptic number.

It is an amenable number.

66167668 is an abundant number, since it is smaller than the sum of its proper divisors (66773644).

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

66167668 is a wasteful number, since it uses less digits than its factorization.

66167668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10831 (or 10829 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 66167668 is about 8134.3511111827. The cubic root of 66167668 is about 404.4659281503.

The spelling of 66167668 in words is "sixty-six million, one hundred sixty-seven thousand, six hundred sixty-eight".