65540672 has 14 divisors (see below), whose sum is σ = 130057398. Its totient is φ = 32770304.

The previous prime is 65540647. The next prime is 65540687. The reversal of 65540672 is 27604556.

It can be written as a sum of positive squares in only one way, i.e., 53816896 + 11723776 = 7336^2 + 3424^2 .

It is a super-3 number, since 3×65540672³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511973 + ... + 512100.

Almost surely, 2^65540672 is an apocalyptic number.

It is an amenable number.

65540672 is a deficient number, since it is larger than the sum of its proper divisors (64516726).

65540672 is a wasteful number, since it uses less digits than its factorization.

65540672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024085 (or 1024075 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 65540672 is about 8095.7193627250. The cubic root of 65540672 is about 403.1843163884.

The spelling of 65540672 in words is "sixty-five million, five hundred forty thousand, six hundred seventy-two".