75144770 has 8 divisors (see below), whose sum is σ = 135260604. Its totient is φ = 30057904.

The previous prime is 75144733. The next prime is 75144781. The reversal of 75144770 is 7744157.

It can be written as a sum of positive squares in 2 ways, for example, as 73324969 + 1819801 = 8563^2 + 1349^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 75144770.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3757229 + ... + 3757248.

Almost surely, 2^75144770 is an apocalyptic number.

75144770 is a deficient number, since it is larger than the sum of its proper divisors (60115834).

75144770 is a wasteful number, since it uses less digits than its factorization.

75144770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514484.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 75144770 is about 8668.6083081427. The cubic root of 75144770 is about 421.9874999105.

The spelling of 75144770 in words is "seventy-five million, one hundred forty-four thousand, seven hundred seventy".