7936561 has 4 divisors (see below), whose sum is σ = 8105472. Its totient is φ = 7767652.

The previous prime is 7936531. The next prime is 7936567. The reversal of 7936561 is 1656397.

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: 1656397 = 233 ⋅7109.

It is a cyclic number.

It is not a de Polignac number, because 7936561 - 2⁵ = 7936529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7936561.

It is not an unprimeable number, because it can be changed into a prime (7936567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84385 + ... + 84478.

It is an arithmetic number, because the mean of its divisors is an integer number (2026368).

Almost surely, 2^7936561 is an apocalyptic number.

It is an amenable number.

7936561 is a deficient number, since it is larger than the sum of its proper divisors (168911).

7936561 is a wasteful number, since it uses less digits than its factorization.

7936561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168910.

The product of its digits is 34020, while the sum is 37.

The square root of 7936561 is about 2817.1902669149. The cubic root of 7936561 is about 199.4699380795.

The spelling of 7936561 in words is "seven million, nine hundred thirty-six thousand, five hundred sixty-one".