65627988 has 12 divisors (see below), whose sum is σ = 153132000. Its totient is φ = 21875992.

The previous prime is 65627971. The next prime is 65627999. The reversal of 65627988 is 88972656.

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

It is a self number, because there is not a number n which added to its sum of digits gives 65627988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734488 + ... + 2734511.

It is an arithmetic number, because the mean of its divisors is an integer number (12761000).

Almost surely, 2^65627988 is an apocalyptic number.

It is an amenable number.

65627988 is an abundant number, since it is smaller than the sum of its proper divisors (87504012).

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

65627988 is a wasteful number, since it uses less digits than its factorization.

65627988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469006 (or 5469004 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 65627988 is about 8101.1102942745. The cubic root of 65627988 is about 403.3632832225.

The spelling of 65627988 in words is "sixty-five million, six hundred twenty-seven thousand, nine hundred eighty-eight".