68897520 has 160 divisors (see below), whose sum is σ = 239984640. Its totient is φ = 18167040.

The previous prime is 68897513. The next prime is 68897527. The reversal of 68897520 is 2579886.

It is an interprime number because it is at equal distance from previous prime (68897513) and next prime (68897527).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68897527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 360625 + ... + 360815.

It is an arithmetic number, because the mean of its divisors is an integer number (1499904).

Almost surely, 2^68897520 is an apocalyptic number.

68897520 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 68897520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119992320).

68897520 is an abundant number, since it is smaller than the sum of its proper divisors (171087120).

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

68897520 is a wasteful number, since it uses less digits than its factorization.

68897520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 68897520 is about 8300.4529996862. The cubic root of 68897520 is about 409.9534351241.

The spelling of 68897520 in words is "sixty-eight million, eight hundred ninety-seven thousand, five hundred twenty".