667146536 has 32 divisors (see below), whose sum is σ = 1475719680. Its totient is φ = 276696000.

The previous prime is 667146523. The next prime is 667146559. The reversal of 667146536 is 635641766.

667146536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190415 + ... + 193886.

It is an arithmetic number, because the mean of its divisors is an integer number (46116240).

Almost surely, 2^667146536 is an apocalyptic number.

It is an amenable number.

667146536 is an abundant number, since it is smaller than the sum of its proper divisors (808573144).

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

667146536 is a wasteful number, since it uses less digits than its factorization.

667146536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384345 (or 384341 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The square root of 667146536 is about 25829.1799327815. The cubic root of 667146536 is about 873.7900167032.

The spelling of 667146536 in words is "six hundred sixty-seven million, one hundred forty-six thousand, five hundred thirty-six".