64165672 has 8 divisors (see below), whose sum is σ = 120310650. Its totient is φ = 32082832.

The previous prime is 64165663. The next prime is 64165687. The reversal of 64165672 is 27656146.

It is a happy number.

64165672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 40018276 + 24147396 = 6326^2 + 4914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×64165672³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4010347 + ... + 4010362.

Almost surely, 2^64165672 is an apocalyptic number.

It is an amenable number.

64165672 is a deficient number, since it is larger than the sum of its proper divisors (56144978).

64165672 is a wasteful number, since it uses less digits than its factorization.

64165672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8020715 (or 8020711 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 64165672 is about 8010.3478076798. The cubic root of 64165672 is about 400.3448526063.

The spelling of 64165672 in words is "sixty-four million, one hundred sixty-five thousand, six hundred seventy-two".