8667601812 has 36 divisors (see below), whose sum is σ = 22019888800. Its totient is φ = 2874679632.

The previous prime is 8667601781. The next prime is 8667601871. The reversal of 8667601812 is 2181067668.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 597778 + ... + 612105.

Almost surely, 2^8667601812 is an apocalyptic number.

It is an amenable number.

8667601812 is an abundant number, since it is smaller than the sum of its proper divisors (13352286988).

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

8667601812 is a wasteful number, since it uses less digits than its factorization.

8667601812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210092 (or 1210087 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 8667601812 is about 93099.9560257683. The cubic root of 8667601812 is about 2054.1539259531.

The spelling of 8667601812 in words is "eight billion, six hundred sixty-seven million, six hundred one thousand, eight hundred twelve".