75741661 has 4 divisors (see below), whose sum is σ = 76779292. Its totient is φ = 74704032.

The previous prime is 75741643. The next prime is 75741671. The reversal of 75741661 is 16614757.

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 46376100 + 29365561 = 6810^2 + 5419^2 .

It is a cyclic number.

It is not a de Polignac number, because 75741661 - 2⁵ = 75741629 is a prime.

It is a super-2 number, since 2×75741661² = 11473598422077842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75741661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75741671) 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, 518706 + ... + 518851.

It is an arithmetic number, because the mean of its divisors is an integer number (19194823).

Almost surely, 2^75741661 is an apocalyptic number.

It is an amenable number.

75741661 is a deficient number, since it is larger than the sum of its proper divisors (1037631).

75741661 is a wasteful number, since it uses less digits than its factorization.

75741661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037630.

The product of its digits is 35280, while the sum is 37.

The square root of 75741661 is about 8702.9685165465. The cubic root of 75741661 is about 423.1018669057.

The spelling of 75741661 in words is "seventy-five million, seven hundred forty-one thousand, six hundred sixty-one".