7998261 has 4 divisors (see below), whose sum is σ = 10664352. Its totient is φ = 5332172.

The previous prime is 7998223. The next prime is 7998269. The reversal of 7998261 is 1628997.

7998261 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1628997 = 3 ⋅542999.

It is a cyclic number.

It is not a de Polignac number, because 7998261 - 2⁹ = 7997749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7998269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333041 + ... + 1333046.

It is an arithmetic number, because the mean of its divisors is an integer number (2666088).

Almost surely, 2^7998261 is an apocalyptic number.

It is an amenable number.

7998261 is a deficient number, since it is larger than the sum of its proper divisors (2666091).

7998261 is a wasteful number, since it uses less digits than its factorization.

7998261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666090.

The product of its digits is 54432, while the sum is 42.

The square root of 7998261 is about 2828.1196933652. The cubic root of 7998261 is about 199.9855072832.

The spelling of 7998261 in words is "seven million, nine hundred ninety-eight thousand, two hundred sixty-one".