75761661 has 8 divisors (see below), whose sum is σ = 101098624. Its totient is φ = 50466240.

The previous prime is 75761633. The next prime is 75761677. The reversal of 75761661 is 16616757.

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

It is not a de Polignac number, because 75761661 - 2¹¹ = 75759613 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 (75761261) 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 7 ways as a sum of consecutive naturals, for example, 5845 + ... + 13626.

It is an arithmetic number, because the mean of its divisors is an integer number (12637328).

Almost surely, 2^75761661 is an apocalyptic number.

It is an amenable number.

75761661 is a deficient number, since it is larger than the sum of its proper divisors (25336963).

75761661 is a wasteful number, since it uses less digits than its factorization.

75761661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20771.

The product of its digits is 52920, while the sum is 39.

The square root of 75761661 is about 8704.1174739315. The cubic root of 75761661 is about 423.1391044159.

The spelling of 75761661 in words is "seventy-five million, seven hundred sixty-one thousand, six hundred sixty-one".