68693520 has 160 divisors (see below), whose sum is σ = 251412480. Its totient is φ = 15183360.

The previous prime is 68693519. The next prime is 68693533. The reversal of 68693520 is 2539686.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51421 + ... + 52739.

It is an arithmetic number, because the mean of its divisors is an integer number (1571328).

Almost surely, 2^68693520 is an apocalyptic number.

68693520 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 68693520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125706240).

68693520 is an abundant number, since it is smaller than the sum of its proper divisors (182718960).

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

68693520 is a wasteful number, since it uses less digits than its factorization.

68693520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 68693520 is about 8288.1554039485. The cubic root of 68693520 is about 409.5484221045.

The spelling of 68693520 in words is "sixty-eight million, six hundred ninety-three thousand, five hundred twenty".