162680921 has 6 divisors (see below), whose sum is σ = 176157630. Its totient is φ = 150166848.

The previous prime is 162680899. The next prime is 162680933. The reversal of 162680921 is 129086261.

It can be written as a sum of positive squares in 3 ways, for example, as 18800896 + 143880025 = 4336^2 + 11995^2 .

It is not a de Polignac number, because 162680921 - 2⁶ = 162680857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162680941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 481136 + ... + 481473.

It is an arithmetic number, because the mean of its divisors is an integer number (29359605).

Almost surely, 2^162680921 is an apocalyptic number.

It is an amenable number.

162680921 is a deficient number, since it is larger than the sum of its proper divisors (13476709).

162680921 is an equidigital number, since it uses as much as digits as its factorization.

162680921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962635 (or 962622 counting only the distinct ones).

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

The square root of 162680921 is about 12754.6431153522. The cubic root of 162680921 is about 545.8988852816.

The spelling of 162680921 in words is "one hundred sixty-two million, six hundred eighty thousand, nine hundred twenty-one".