3457997 has 2 divisors, whose sum is σ = 3457998. Its totient is φ = 3457996.

The previous prime is 3457991. The next prime is 3457999. The reversal of 3457997 is 7997543.

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., 3455881 + 2116 = 1859^2 + 46^2 .

It is an emirp because it is prime and its reverse (7997543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3457997 is a prime.

Together with 3457999, 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 (3457991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1728998 + 1728999.

It is an arithmetic number, because the mean of its divisors is an integer number (1728999).

Almost surely, 2^3457997 is an apocalyptic number.

It is an amenable number.

3457997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3457997 is an equidigital number, since it uses as much as digits as its factorization.

3457997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 44.

The square root of 3457997 is about 1859.5690360941. The cubic root of 3457997 is about 151.2196414720.

The spelling of 3457997 in words is "three million, four hundred fifty-seven thousand, nine hundred ninety-seven".