75660290 has 8 divisors (see below), whose sum is σ = 136188540. Its totient is φ = 30264112.

The previous prime is 75660287. The next prime is 75660307. The reversal of 75660290 is 9206657.

It can be written as a sum of positive squares in 2 ways, for example, as 74321641 + 1338649 = 8621^2 + 1157^2 .

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

It is a super-3 number, since 3×75660290³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75660290.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3783005 + ... + 3783024.

Almost surely, 2^75660290 is an apocalyptic number.

75660290 is a deficient number, since it is larger than the sum of its proper divisors (60528250).

75660290 is a wasteful number, since it uses less digits than its factorization.

75660290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7566036.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 75660290 is about 8698.2923611477. The cubic root of 75660290 is about 422.9502966077.

The spelling of 75660290 in words is "seventy-five million, six hundred sixty thousand, two hundred ninety".