7971361 has 4 divisors (see below), whose sum is σ = 8022292. Its totient is φ = 7920432.

The previous prime is 7971347. The next prime is 7971373. The reversal of 7971361 is 1631797.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4227136 + 3744225 = 2056^2 + 1935^2 .

It is a cyclic number.

It is not a de Polignac number, because 7971361 - 2⁹ = 7970849 is a prime.

It is a Duffinian number.

7971361 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971311) 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, 25230 + ... + 25543.

It is an arithmetic number, because the mean of its divisors is an integer number (2005573).

Almost surely, 2^7971361 is an apocalyptic number.

It is an amenable number.

7971361 is a deficient number, since it is larger than the sum of its proper divisors (50931).

7971361 is a wasteful number, since it uses less digits than its factorization.

7971361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50930.

The product of its digits is 7938, while the sum is 34.

The square root of 7971361 is about 2823.3598778760. The cubic root of 7971361 is about 199.7610563099.

The spelling of 7971361 in words is "seven million, nine hundred seventy-one thousand, three hundred sixty-one".