167642645 has 8 divisors (see below), whose sum is σ = 206078040. Its totient is φ = 130842880.

The previous prime is 167642641. The next prime is 167642663. The reversal of 167642645 is 546246761.

It is a happy number.

167642645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 167365969 = 526^2 + 12937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 167642645 - 2² = 167642641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167642641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408680 + ... + 409089.

It is an arithmetic number, because the mean of its divisors is an integer number (25759755).

Almost surely, 2^167642645 is an apocalyptic number.

It is an amenable number.

167642645 is a deficient number, since it is larger than the sum of its proper divisors (38435395).

167642645 is an equidigital number, since it uses as much as digits as its factorization.

167642645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817815.

The product of its digits is 241920, while the sum is 41.

The square root of 167642645 is about 12947.6887898961. The cubic root of 167642645 is about 551.3933212971.

The spelling of 167642645 in words is "one hundred sixty-seven million, six hundred forty-two thousand, six hundred forty-five".