75170661 has 8 divisors (see below), whose sum is σ = 101926560. Its totient is φ = 49264272.

The previous prime is 75170657. The next prime is 75170663. The reversal of 75170661 is 16607157.

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

It is not a de Polignac number, because 75170661 - 2² = 75170657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75170663) 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, 212170 + ... + 212523.

It is an arithmetic number, because the mean of its divisors is an integer number (12740820).

Almost surely, 2^75170661 is an apocalyptic number.

It is an amenable number.

75170661 is a deficient number, since it is larger than the sum of its proper divisors (26755899).

75170661 is a wasteful number, since it uses less digits than its factorization.

75170661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424755.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 75170661 is about 8670.1015564986. The cubic root of 75170661 is about 422.0359593655.

The spelling of 75170661 in words is "seventy-five million, one hundred seventy thousand, six hundred sixty-one".