68909760 has 168 divisors, whose sum is σ = 241072416. Its totient is φ = 18063360.

The previous prime is 68909759. The next prime is 68909801. The reversal of 68909760 is 6790986.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204312 + ... + 204648.

Almost surely, 2^68909760 is an apocalyptic number.

68909760 is a gapful number since it is divisible by the number (60) 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 68909760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120536208).

68909760 is an abundant number, since it is smaller than the sum of its proper divisors (172162656).

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

68909760 is a wasteful number, since it uses less digits than its factorization.

68909760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 68909760 is about 8301.1902760990. The cubic root of 68909760 is about 409.9777104678.

The spelling of 68909760 in words is "sixty-eight million, nine hundred nine thousand, seven hundred sixty".