167640701 has 2 divisors, whose sum is σ = 167640702. Its totient is φ = 167640700.

The previous prime is 167640691. The next prime is 167640761. The reversal of 167640701 is 107046761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91968100 + 75672601 = 9590^2 + 8699^2 .

It is a cyclic number.

It is not a de Polignac number, because 167640701 - 2¹⁰ = 167639677 is a prime.

It is a super-4 number, since 4×167640701⁴ (a number of 34 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167640761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83820350 + 83820351.

It is an arithmetic number, because the mean of its divisors is an integer number (83820351).

Almost surely, 2^167640701 is an apocalyptic number.

It is an amenable number.

167640701 is a deficient number, since it is larger than the sum of its proper divisors (1).

167640701 is an equidigital number, since it uses as much as digits as its factorization.

167640701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 167640701 is about 12947.6137183652. The cubic root of 167640701 is about 551.3911899524.

The spelling of 167640701 in words is "one hundred sixty-seven million, six hundred forty thousand, seven hundred one".