162621073 has 2 divisors, whose sum is σ = 162621074. Its totient is φ = 162621072.

The previous prime is 162621007. The next prime is 162621077. The reversal of 162621073 is 370126261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162613504 + 7569 = 12752^2 + 87^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162621073 is a prime.

It is a super-2 number, since 2×162621073² = 52891226767342658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (162621077) by changing a digit.

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, 81310536 + 81310537.

It is an arithmetic number, because the mean of its divisors is an integer number (81310537).

Almost surely, 2^162621073 is an apocalyptic number.

It is an amenable number.

162621073 is a deficient number, since it is larger than the sum of its proper divisors (1).

162621073 is an equidigital number, since it uses as much as digits as its factorization.

162621073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 162621073 is about 12752.2967735228. The cubic root of 162621073 is about 545.8319342556.

The spelling of 162621073 in words is "one hundred sixty-two million, six hundred twenty-one thousand, seventy-three".