7365717661 has 4 divisors (see below), whose sum is σ = 7379183872. Its totient is φ = 7352251452.

The previous prime is 7365717649. The next prime is 7365717683. The reversal of 7365717661 is 1667175637.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 7365717661 - 2¹⁷ = 7365586589 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 (7365717641) 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, 6732285 + ... + 6733378.

It is an arithmetic number, because the mean of its divisors is an integer number (1844795968).

Almost surely, 2^7365717661 is an apocalyptic number.

It is an amenable number.

7365717661 is a deficient number, since it is larger than the sum of its proper divisors (13466211).

7365717661 is a wasteful number, since it uses less digits than its factorization.

7365717661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13466210.

The product of its digits is 1111320, while the sum is 49.

The square root of 7365717661 is about 85823.7593035868. The cubic root of 7365717661 is about 1945.6812297753.

The spelling of 7365717661 in words is "seven billion, three hundred sixty-five million, seven hundred seventeen thousand, six hundred sixty-one".