65720076 has 12 divisors (see below), whose sum is σ = 153346872. Its totient is φ = 21906688.

The previous prime is 65720071. The next prime is 65720117. The reversal of 65720076 is 67002756.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (65720071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2738325 + ... + 2738348.

It is an arithmetic number, because the mean of its divisors is an integer number (12778906).

Almost surely, 2^65720076 is an apocalyptic number.

It is an amenable number.

65720076 is an abundant number, since it is smaller than the sum of its proper divisors (87626796).

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

65720076 is a wasteful number, since it uses less digits than its factorization.

65720076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476680 (or 5476678 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 65720076 is about 8106.7919672334. The cubic root of 65720076 is about 403.5518590573.

The spelling of 65720076 in words is "sixty-five million, seven hundred twenty thousand, seventy-six".