351666701 has 2 divisors, whose sum is σ = 351666702. Its totient is φ = 351666700.

The previous prime is 351666587. The next prime is 351666703. The reversal of 351666701 is 107666153.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335256100 + 16410601 = 18310^2 + 4051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351666701 is a prime.

Together with 351666703, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351666703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175833350 + 175833351.

It is an arithmetic number, because the mean of its divisors is an integer number (175833351).

Almost surely, 2^351666701 is an apocalyptic number.

It is an amenable number.

351666701 is a deficient number, since it is larger than the sum of its proper divisors (1).

351666701 is an equidigital number, since it uses as much as digits as its factorization.

351666701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 351666701 is about 18752.7784874669. The cubic root of 351666701 is about 705.8467441205.

The spelling of 351666701 in words is "three hundred fifty-one million, six hundred sixty-six thousand, seven hundred one".