340671997 has 2 divisors, whose sum is σ = 340671998. Its totient is φ = 340671996.

The previous prime is 340671941. The next prime is 340672043. The reversal of 340671997 is 799176043.

It is an a-pointer prime, because the next prime (340672043) can be obtained adding 340671997 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232074756 + 108597241 = 15234^2 + 10421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340671997 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 (340621997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170335998 + 170335999.

It is an arithmetic number, because the mean of its divisors is an integer number (170335999).

Almost surely, 2^340671997 is an apocalyptic number.

It is an amenable number.

340671997 is a deficient number, since it is larger than the sum of its proper divisors (1).

340671997 is an equidigital number, since it uses as much as digits as its factorization.

340671997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 340671997 is about 18457.3019967708. The cubic root of 340671997 is about 698.4127280212.

The spelling of 340671997 in words is "three hundred forty million, six hundred seventy-one thousand, nine hundred ninety-seven".