7970257 has 2 divisors, whose sum is σ = 7970258. Its totient is φ = 7970256.

The previous prime is 7970227. The next prime is 7970267. The reversal of 7970257 is 7520797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 40401 = 2816^2 + 201^2 .

It is an emirp because it is prime and its reverse (7520797) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7970257 is a prime.

7970257 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7970227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3985128 + 3985129.

It is an arithmetic number, because the mean of its divisors is an integer number (3985129).

Almost surely, 2^7970257 is an apocalyptic number.

It is an amenable number.

7970257 is a deficient number, since it is larger than the sum of its proper divisors (1).

7970257 is an equidigital number, since it uses as much as digits as its factorization.

7970257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870, while the sum is 37.

The square root of 7970257 is about 2823.1643593670. The cubic root of 7970257 is about 199.7518338619.

The spelling of 7970257 in words is "seven million, nine hundred seventy thousand, two hundred fifty-seven".