68692988 has 72 divisors (see below), whose sum is σ = 157409952. Its totient is φ = 25537536.

The previous prime is 68692963. The next prime is 68693017. The reversal of 68692988 is 88929686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104870 + ... + 105522.

Almost surely, 2^68692988 is an apocalyptic number.

68692988 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68692988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78704976).

68692988 is an abundant number, since it is smaller than the sum of its proper divisors (88716964).

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

68692988 is a wasteful number, since it uses less digits than its factorization.

68692988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 692 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 56.

The square root of 68692988 is about 8288.1233098935. The cubic root of 68692988 is about 409.5473648465.

The spelling of 68692988 in words is "sixty-eight million, six hundred ninety-two thousand, nine hundred eighty-eight".