168920707 has 2 divisors, whose sum is σ = 168920708. Its totient is φ = 168920706.

The previous prime is 168920693. The next prime is 168920729. The reversal of 168920707 is 707029861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168920707 - 2²⁷ = 34702979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168920707.

It is not a weakly prime, because it can be changed into another prime (168920797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84460353 + 84460354.

It is an arithmetic number, because the mean of its divisors is an integer number (84460354).

Almost surely, 2^168920707 is an apocalyptic number.

168920707 is a deficient number, since it is larger than the sum of its proper divisors (1).

168920707 is an equidigital number, since it uses as much as digits as its factorization.

168920707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 168920707 is about 12996.9499114215. The cubic root of 168920707 is about 552.7909997659.

The spelling of 168920707 in words is "one hundred sixty-eight million, nine hundred twenty thousand, seven hundred seven".