162012661 has 2 divisors, whose sum is σ = 162012662. Its totient is φ = 162012660.

The previous prime is 162012611. The next prime is 162012673. The reversal of 162012661 is 166210261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86843761 + 75168900 = 9319^2 + 8670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162012661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162012611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81006330 + 81006331.

It is an arithmetic number, because the mean of its divisors is an integer number (81006331).

Almost surely, 2^162012661 is an apocalyptic number.

It is an amenable number.

162012661 is a deficient number, since it is larger than the sum of its proper divisors (1).

162012661 is an equidigital number, since it uses as much as digits as its factorization.

162012661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 162012661 is about 12728.4194226935. The cubic root of 162012661 is about 545.1503790623.

The spelling of 162012661 in words is "one hundred sixty-two million, twelve thousand, six hundred sixty-one".