65727664 has 10 divisors (see below), whose sum is σ = 127347380. Its totient is φ = 32863824.

The previous prime is 65727653. The next prime is 65727677. The reversal of 65727664 is 46672756.

It is a super-3 number, since 3×65727664³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65727664.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2053974 + ... + 2054005.

It is an arithmetic number, because the mean of its divisors is an integer number (12734738).

Almost surely, 2^65727664 is an apocalyptic number.

It is an amenable number.

65727664 is a deficient number, since it is larger than the sum of its proper divisors (61619716).

65727664 is a wasteful number, since it uses less digits than its factorization.

65727664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107987 (or 4107981 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 65727664 is about 8107.2599563601. The cubic root of 65727664 is about 403.5673897436.

The spelling of 65727664 in words is "sixty-five million, seven hundred twenty-seven thousand, six hundred sixty-four".