65897760 has 192 divisors, whose sum is σ = 222953472. Its totient is φ = 16321536.

The previous prime is 65897747. The next prime is 65897761. The reversal of 65897760 is 6779856.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (65897761) 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, 518817 + ... + 518943.

It is an arithmetic number, because the mean of its divisors is an integer number (1161216).

Almost surely, 2^65897760 is an apocalyptic number.

65897760 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 65897760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111476736).

65897760 is an abundant number, since it is smaller than the sum of its proper divisors (157055712).

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

65897760 is a wasteful number, since it uses less digits than its factorization.

65897760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 65897760 is about 8117.7435288385. The cubic root of 65897760 is about 403.9152192780.

The spelling of 65897760 in words is "sixty-five million, eight hundred ninety-seven thousand, seven hundred sixty".