345927997 has 2 divisors, whose sum is σ = 345927998. Its totient is φ = 345927996.

The previous prime is 345927983. The next prime is 345928001. The reversal of 345927997 is 799729543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345439396 + 488601 = 18586^2 + 699^2 .

It is an emirp because it is prime and its reverse (799729543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345927997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345927937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172963998 + 172963999.

It is an arithmetic number, because the mean of its divisors is an integer number (172963999).

Almost surely, 2^345927997 is an apocalyptic number.

It is an amenable number.

345927997 is a deficient number, since it is larger than the sum of its proper divisors (1).

345927997 is an equidigital number, since it uses as much as digits as its factorization.

345927997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 55.

The square root of 345927997 is about 18599.1396844048. The cubic root of 345927997 is about 701.9861936988.

The spelling of 345927997 in words is "three hundred forty-five million, nine hundred twenty-seven thousand, nine hundred ninety-seven".