7545683661 has 8 divisors (see below), whose sum is σ = 10077167520. Its totient is φ = 5022327792.

The previous prime is 7545683653. The next prime is 7545683753. The reversal of 7545683661 is 1663865457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7545683661 - 2³ = 7545683653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7545683611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2029830 + ... + 2033543.

It is an arithmetic number, because the mean of its divisors is an integer number (1259645940).

Almost surely, 2^7545683661 is an apocalyptic number.

It is an amenable number.

7545683661 is a deficient number, since it is larger than the sum of its proper divisors (2531483859).

7545683661 is a wasteful number, since it uses less digits than its factorization.

7545683661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063995.

The product of its digits is 3628800, while the sum is 51.

The square root of 7545683661 is about 86865.8946940628. The cubic root of 7545683661 is about 1961.4001224697.

The spelling of 7545683661 in words is "seven billion, five hundred forty-five million, six hundred eighty-three thousand, six hundred sixty-one".