65505360 has 80 divisors (see below), whose sum is σ = 204272640. Its totient is φ = 17364480.

The previous prime is 65505347. The next prime is 65505373. The reversal of 65505360 is 6350556.

It is an interprime number because it is at equal distance from previous prime (65505347) and next prime (65505373).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45126 + ... + 46554.

It is an arithmetic number, because the mean of its divisors is an integer number (2553408).

Almost surely, 2^65505360 is an apocalyptic number.

65505360 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 65505360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102136320).

65505360 is an abundant number, since it is smaller than the sum of its proper divisors (138767280).

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

65505360 is a wasteful number, since it uses less digits than its factorization.

65505360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 65505360 is about 8093.5381632510. The cubic root of 65505360 is about 403.1118941716. Note that the first 3 decimals are identical.

The spelling of 65505360 in words is "sixty-five million, five hundred five thousand, three hundred sixty".