68642892 has 18 divisors (see below), whose sum is σ = 173514068. Its totient is φ = 22880952.

The previous prime is 68642887. The next prime is 68642947. The reversal of 68642892 is 29824686.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 953338 + ... + 953409.

Almost surely, 2^68642892 is an apocalyptic number.

It is an amenable number.

68642892 is an abundant number, since it is smaller than the sum of its proper divisors (104871176).

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

68642892 is a wasteful number, since it uses less digits than its factorization.

68642892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906757 (or 1906752 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 68642892 is about 8285.1006028895. The cubic root of 68642892 is about 409.4477832403.

The spelling of 68642892 in words is "sixty-eight million, six hundred forty-two thousand, eight hundred ninety-two".