65886240 has 96 divisors (see below), whose sum is σ = 237202560. Its totient is φ = 15058944.

The previous prime is 65886209. The next prime is 65886241. The reversal of 65886240 is 4268856.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65886241) 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, 6445 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (2470860).

Almost surely, 2^65886240 is an apocalyptic number.

65886240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65886240 is an abundant number, since it is smaller than the sum of its proper divisors (171316320).

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

65886240 is a wasteful number, since it uses less digits than its factorization.

65886240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19634 (or 19626 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 65886240 is about 8117.0339410403. The cubic root of 65886240 is about 403.8916809235.

The spelling of 65886240 in words is "sixty-five million, eight hundred eighty-six thousand, two hundred forty".