162608921 has 4 divisors (see below), whose sum is σ = 164048052. Its totient is φ = 161169792.

The previous prime is 162608891. The next prime is 162608923. The reversal of 162608921 is 129806261.

162608921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5382400 + 157226521 = 2320^2 + 12539^2 .

It is a cyclic number.

It is not a de Polignac number, because 162608921 - 2¹⁴ = 162592537 is a prime.

It is a super-2 number, since 2×162608921² = 52883322377568482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162608923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719396 + ... + 719621.

It is an arithmetic number, because the mean of its divisors is an integer number (41012013).

Almost surely, 2^162608921 is an apocalyptic number.

It is an amenable number.

162608921 is a deficient number, since it is larger than the sum of its proper divisors (1439131).

162608921 is a wasteful number, since it uses less digits than its factorization.

162608921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439130.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 162608921 is about 12751.8203014315. The cubic root of 162608921 is about 545.8183379962.

The spelling of 162608921 in words is "one hundred sixty-two million, six hundred eight thousand, nine hundred twenty-one".