65871340 has 24 divisors (see below), whose sum is σ = 139627152. Its totient is φ = 26101440.

The previous prime is 65871283. The next prime is 65871343. The reversal of 65871340 is 4317856.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 65871296 and 65871305.

It is not an unprimeable number, because it can be changed into a prime (65871343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13251 + ... + 17530.

It is an arithmetic number, because the mean of its divisors is an integer number (5817798).

Almost surely, 2^65871340 is an apocalyptic number.

It is an amenable number.

65871340 is an abundant number, since it is smaller than the sum of its proper divisors (73755812).

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

65871340 is a wasteful number, since it uses less digits than its factorization.

65871340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30897 (or 30895 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 65871340 is about 8116.1160661982. The cubic root of 65871340 is about 403.8612322808.

The spelling of 65871340 in words is "sixty-five million, eight hundred seventy-one thousand, three hundred forty".