157706999 has 2 divisors, whose sum is σ = 157707000. Its totient is φ = 157706998.

The previous prime is 157706953. The next prime is 157707001. The reversal of 157706999 is 999607751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157706999 - 2⁸ = 157706743 is a prime.

It is a Sophie Germain prime.

Together with 157707001, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157706999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157706299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78853499 + 78853500.

It is an arithmetic number, because the mean of its divisors is an integer number (78853500).

Almost surely, 2^157706999 is an apocalyptic number.

157706999 is a deficient number, since it is larger than the sum of its proper divisors (1).

157706999 is an equidigital number, since it uses as much as digits as its factorization.

157706999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1071630, while the sum is 53.

The square root of 157706999 is about 12558.1447276260. The cubic root of 157706999 is about 540.2776338684.

The spelling of 157706999 in words is "one hundred fifty-seven million, seven hundred six thousand, nine hundred ninety-nine".