75691090 has 16 divisors (see below), whose sum is σ = 136429272. Its totient is φ = 30235264.

The previous prime is 75691069. The next prime is 75691127. The reversal of 75691090 is 9019657.

It can be written as a sum of positive squares in 4 ways, for example, as 40157569 + 35533521 = 6337^2 + 5961^2 .

It is a super-2 number, since 2×75691090² = 11458282210776200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3222 + ... + 12718.

Almost surely, 2^75691090 is an apocalyptic number.

75691090 is a deficient number, since it is larger than the sum of its proper divisors (60738182).

75691090 is a wasteful number, since it uses less digits than its factorization.

75691090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10301.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 75691090 is about 8700.0626434526. The cubic root of 75691090 is about 423.0076807470.

The spelling of 75691090 in words is "seventy-five million, six hundred ninety-one thousand, ninety".