65371988 has 24 divisors (see below), whose sum is σ = 125012160. Its totient is φ = 29664320.

The previous prime is 65371981. The next prime is 65371991. The reversal of 65371988 is 88917356.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65371981) 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, 41153 + ... + 42711.

It is an arithmetic number, because the mean of its divisors is an integer number (5208840).

Almost surely, 2^65371988 is an apocalyptic number.

It is an amenable number.

65371988 is a deficient number, since it is larger than the sum of its proper divisors (59640172).

65371988 is a wasteful number, since it uses less digits than its factorization.

65371988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2525 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 65371988 is about 8085.2945524576. The cubic root of 65371988 is about 402.8381233461.

The spelling of 65371988 in words is "sixty-five million, three hundred seventy-one thousand, nine hundred eighty-eight".