68493984 has 96 divisors (see below), whose sum is σ = 196608384. Its totient is φ = 20751360.

The previous prime is 68493979. The next prime is 68493991. The reversal of 68493984 is 48939486.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88222 + ... + 88994.

It is an arithmetic number, because the mean of its divisors is an integer number (2048004).

Almost surely, 2^68493984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68493984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98304192).

68493984 is an abundant number, since it is smaller than the sum of its proper divisors (128114400).

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

68493984 is a wasteful number, since it uses less digits than its factorization.

68493984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 862 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 68493984 is about 8276.1092307920. The cubic root of 68493984 is about 409.1514952602.

The spelling of 68493984 in words is "sixty-eight million, four hundred ninety-three thousand, nine hundred eighty-four".