7897261 has 2 divisors, whose sum is σ = 7897262. Its totient is φ = 7897260.

The previous prime is 7897247. The next prime is 7897271. The reversal of 7897261 is 1627987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6502500 + 1394761 = 2550^2 + 1181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7897261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7897271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3948630 + 3948631.

It is an arithmetic number, because the mean of its divisors is an integer number (3948631).

Almost surely, 2^7897261 is an apocalyptic number.

It is an amenable number.

7897261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897261 is an equidigital number, since it uses as much as digits as its factorization.

7897261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 7897261 is about 2810.2065760367. The cubic root of 7897261 is about 199.1401502564.

The spelling of 7897261 in words is "seven million, eight hundred ninety-seven thousand, two hundred sixty-one".