168977601 has 24 divisors (see below), whose sum is σ = 265200936. Its totient is φ = 103057920.

The previous prime is 168977591. The next prime is 168977609. The reversal of 168977601 is 106779861.

It can be written as a sum of positive squares in 4 ways, for example, as 3600 + 168974001 = 60^2 + 12999^2 .

It is not a de Polignac number, because 168977601 - 2¹⁴ = 168961217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168977609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6831 + ... + 19611.

It is an arithmetic number, because the mean of its divisors is an integer number (11050039).

Almost surely, 2^168977601 is an apocalyptic number.

It is an amenable number.

168977601 is a deficient number, since it is larger than the sum of its proper divisors (96223335).

168977601 is a wasteful number, since it uses less digits than its factorization.

168977601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913 (or 12910 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 168977601 is about 12999.1384714526. The cubic root of 168977601 is about 552.8530544451.

The spelling of 168977601 in words is "one hundred sixty-eight million, nine hundred seventy-seven thousand, six hundred one".