75738661 has 4 divisors (see below), whose sum is σ = 76097824. Its totient is φ = 75379500.

The previous prime is 75738631. The next prime is 75738679. The reversal of 75738661 is 16683757.

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 75738661 - 2¹³ = 75730469 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 (75738631) 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, 179265 + ... + 179686.

It is an arithmetic number, because the mean of its divisors is an integer number (19024456).

Almost surely, 2^75738661 is an apocalyptic number.

It is an amenable number.

75738661 is a deficient number, since it is larger than the sum of its proper divisors (359163).

75738661 is a wasteful number, since it uses less digits than its factorization.

75738661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359162.

The product of its digits is 211680, while the sum is 43.

The square root of 75738661 is about 8702.7961598558. The cubic root of 75738661 is about 423.0962807138.

The spelling of 75738661 in words is "seventy-five million, seven hundred thirty-eight thousand, six hundred sixty-one".