65171972 has 48 divisors (see below), whose sum is σ = 123150720. Its totient is φ = 30108672.

The previous prime is 65171971. The next prime is 65171993. The reversal of 65171972 is 27917156.

It is not an unprimeable number, because it can be changed into a prime (65171971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597854 + ... + 597962.

It is an arithmetic number, because the mean of its divisors is an integer number (2565640).

Almost surely, 2^65171972 is an apocalyptic number.

It is an amenable number.

65171972 is a deficient number, since it is larger than the sum of its proper divisors (57978748).

65171972 is a wasteful number, since it uses less digits than its factorization.

65171972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 298 counting only the distinct ones).

The product of its digits is 26460, while the sum is 38.

The square root of 65171972 is about 8072.9159539785. The cubic root of 65171972 is about 402.4268544988.

The spelling of 65171972 in words is "sixty-five million, one hundred seventy-one thousand, nine hundred seventy-two".