165316072 has 8 divisors (see below), whose sum is σ = 309967650. Its totient is φ = 82658032.

The previous prime is 165316057. The next prime is 165316079. The reversal of 165316072 is 270613561.

165316072 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., 139570596 + 25745476 = 11814^2 + 5074^2 .

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

It is not an unprimeable number, because it can be changed into a prime (165316079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10332247 + ... + 10332262.

Almost surely, 2^165316072 is an apocalyptic number.

It is an amenable number.

165316072 is a deficient number, since it is larger than the sum of its proper divisors (144651578).

165316072 is a wasteful number, since it uses less digits than its factorization.

165316072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20664515 (or 20664511 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 165316072 is about 12857.5297783050. The cubic root of 165316072 is about 548.8306528196.

The spelling of 165316072 in words is "one hundred sixty-five million, three hundred sixteen thousand, seventy-two".