7376685661 has 4 divisors (see below), whose sum is σ = 7378297024. Its totient is φ = 7375074300.

The previous prime is 7376685643. The next prime is 7376685703. The reversal of 7376685661 is 1665866737.

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: 1665866737 = 17 ⋅97992161.

It is a cyclic number.

It is not a de Polignac number, because 7376685661 - 2¹⁵ = 7376652893 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 (7376685161) 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, 798795 + ... + 807976.

It is an arithmetic number, because the mean of its divisors is an integer number (1844574256).

Almost surely, 2^7376685661 is an apocalyptic number.

It is an amenable number.

7376685661 is a deficient number, since it is larger than the sum of its proper divisors (1611363).

7376685661 is a wasteful number, since it uses less digits than its factorization.

7376685661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611362.

The product of its digits is 7620480, while the sum is 55.

The square root of 7376685661 is about 85887.6339236330. The cubic root of 7376685661 is about 1946.6464965768.

The spelling of 7376685661 in words is "seven billion, three hundred seventy-six million, six hundred eighty-five thousand, six hundred sixty-one".