75342661 has 4 divisors (see below), whose sum is σ = 75467392. Its totient is φ = 75217932.

The previous prime is 75342583. The next prime is 75342677. The reversal of 75342661 is 16624357.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16624357 = 307 ⋅54151.

It is a cyclic number.

It is not a de Polignac number, because 75342661 - 2¹⁵ = 75309893 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 (75342361) 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, 61455 + ... + 62668.

It is an arithmetic number, because the mean of its divisors is an integer number (18866848).

Almost surely, 2^75342661 is an apocalyptic number.

It is an amenable number.

75342661 is a deficient number, since it is larger than the sum of its proper divisors (124731).

75342661 is a wasteful number, since it uses less digits than its factorization.

75342661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124730.

The product of its digits is 30240, while the sum is 34.

The square root of 75342661 is about 8680.0150345492. The cubic root of 75342661 is about 422.3576047572.

The spelling of 75342661 in words is "seventy-five million, three hundred forty-two thousand, six hundred sixty-one".