7960661 has 4 divisors (see below), whose sum is σ = 8175852. Its totient is φ = 7745472.

The previous prime is 7960651. The next prime is 7960679. The reversal of 7960661 is 1660697.

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 7562500 + 398161 = 2750^2 + 631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7960661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7960621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107540 + ... + 107613.

It is an arithmetic number, because the mean of its divisors is an integer number (2043963).

Almost surely, 2^7960661 is an apocalyptic number.

It is an amenable number.

7960661 is a deficient number, since it is larger than the sum of its proper divisors (215191).

7960661 is a wasteful number, since it uses less digits than its factorization.

7960661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215190.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 7960661 is about 2821.4643361205. The cubic root of 7960661 is about 199.6716361811.

The spelling of 7960661 in words is "seven million, nine hundred sixty thousand, six hundred sixty-one".