7998061 has 2 divisors, whose sum is σ = 7998062. Its totient is φ = 7998060.

The previous prime is 7998059. The next prime is 7998073. The reversal of 7998061 is 1608997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7645225 + 352836 = 2765^2 + 594^2 .

It is a cyclic number.

It is not a de Polignac number, because 7998061 - 2¹ = 7998059 is a prime.

Together with 7998059, 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 (7998091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999030 + 3999031.

It is an arithmetic number, because the mean of its divisors is an integer number (3999031).

Almost surely, 2^7998061 is an apocalyptic number.

It is an amenable number.

7998061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7998061 is an equidigital number, since it uses as much as digits as its factorization.

7998061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 7998061 is about 2828.0843339618. The cubic root of 7998061 is about 199.9838403610.

The spelling of 7998061 in words is "seven million, nine hundred ninety-eight thousand, sixty-one".