65754720 has 192 divisors, whose sum is σ = 238049280. Its totient is φ = 16934400.

The previous prime is 65754709. The next prime is 65754749. The reversal of 65754720 is 2745756.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 133675 + ... + 134165.

It is an arithmetic number, because the mean of its divisors is an integer number (1239840).

Almost surely, 2^65754720 is an apocalyptic number.

65754720 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 65754720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119024640).

65754720 is an abundant number, since it is smaller than the sum of its proper divisors (172294560).

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

65754720 is a wasteful number, since it uses less digits than its factorization.

65754720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 65754720 is about 8108.9284125586. The cubic root of 65754720 is about 403.6227566965.

The spelling of 65754720 in words is "sixty-five million, seven hundred fifty-four thousand, seven hundred twenty".