6430997 has 2 divisors, whose sum is σ = 6430998. Its totient is φ = 6430996.

The previous prime is 6430969. The next prime is 6431017. The reversal of 6430997 is 7990346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5262436 + 1168561 = 2294^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 6430997 - 2²² = 2236693 is a prime.

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 6430997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6430927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215498 + 3215499.

It is an arithmetic number, because the mean of its divisors is an integer number (3215499).

Almost surely, 2^6430997 is an apocalyptic number.

It is an amenable number.

6430997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6430997 is an equidigital number, since it uses as much as digits as its factorization.

6430997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 6430997 is about 2535.9410482107. The cubic root of 6430997 is about 185.9628110025.

The spelling of 6430997 in words is "six million, four hundred thirty thousand, nine hundred ninety-seven".