65287560 has 64 divisors (see below), whose sum is σ = 210934080. Its totient is φ = 16070400.

The previous prime is 65287549. The next prime is 65287567. The reversal of 65287560 is 6578256.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (65287567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19366 + ... + 22485.

It is an arithmetic number, because the mean of its divisors is an integer number (3295845).

Almost surely, 2^65287560 is an apocalyptic number.

65287560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65287560 is an abundant number, since it is smaller than the sum of its proper divisors (145646520).

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

65287560 is a wasteful number, since it uses less digits than its factorization.

65287560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41878 (or 41874 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 65287560 is about 8080.0717818594. The cubic root of 65287560 is about 402.6646266630.

The spelling of 65287560 in words is "sixty-five million, two hundred eighty-seven thousand, five hundred sixty".