167768401 has 4 divisors (see below), whose sum is σ = 168142500. Its totient is φ = 167394304.

The previous prime is 167768389. The next prime is 167768407. The reversal of 167768401 is 104867761.

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 105042001 + 62726400 = 10249^2 + 7920^2 .

It is a cyclic number.

It is not a de Polignac number, because 167768401 - 2¹³ = 167760209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167768407) 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, 186376 + ... + 187273.

It is an arithmetic number, because the mean of its divisors is an integer number (42035625).

Almost surely, 2^167768401 is an apocalyptic number.

It is an amenable number.

167768401 is a deficient number, since it is larger than the sum of its proper divisors (374099).

167768401 is an equidigital number, since it uses as much as digits as its factorization.

167768401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374098.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 167768401 is about 12952.5441902354. The cubic root of 167768401 is about 551.5311614971.

The spelling of 167768401 in words is "one hundred sixty-seven million, seven hundred sixty-eight thousand, four hundred one".