65879712 has 144 divisors (see below), whose sum is σ = 198761472. Its totient is φ = 20666880.

The previous prime is 65879701. The next prime is 65879717. The reversal of 65879712 is 21797856.

It is a tau number, because it is divible by the number of its divisors (144).

Its product of digits (211680) is a multiple of the sum of its prime divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65879717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419538 + ... + 419694.

It is an arithmetic number, because the mean of its divisors is an integer number (1380288).

Almost surely, 2^65879712 is an apocalyptic number.

65879712 is a gapful number since it is divisible by the number (62) 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 65879712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99380736).

65879712 is an abundant number, since it is smaller than the sum of its proper divisors (132881760).

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

65879712 is a wasteful number, since it uses less digits than its factorization.

65879712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 240 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 65879712 is about 8116.6318137513. The cubic root of 65879712 is about 403.8783413047.

The spelling of 65879712 in words is "sixty-five million, eight hundred seventy-nine thousand, seven hundred twelve".