65566260 has 96 divisors (see below), whose sum is σ = 206640000. Its totient is φ = 17472672.

The previous prime is 65566223. The next prime is 65566273. The reversal of 65566260 is 6266556.

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, 42991 + ... + 44489.

It is an arithmetic number, because the mean of its divisors is an integer number (2152500).

Almost surely, 2^65566260 is an apocalyptic number.

65566260 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 65566260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103320000).

65566260 is an abundant number, since it is smaller than the sum of its proper divisors (141073740).

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

65566260 is a wasteful number, since it uses less digits than its factorization.

65566260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 65566260 is about 8097.2995498499. The cubic root of 65566260 is about 403.2367791705.

The spelling of 65566260 in words is "sixty-five million, five hundred sixty-six thousand, two hundred sixty".