76669091 has 4 divisors (see below), whose sum is σ = 77459592. Its totient is φ = 75878592.

The previous prime is 76669081. The next prime is 76669141. The reversal of 76669091 is 19096667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19096667 = 1973 ⋅9679.

It is a cyclic number.

It is not a de Polignac number, because 76669091 - 2⁶ = 76669027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76669001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 395105 + ... + 395298.

It is an arithmetic number, because the mean of its divisors is an integer number (19364898).

Almost surely, 2^76669091 is an apocalyptic number.

76669091 is a deficient number, since it is larger than the sum of its proper divisors (790501).

76669091 is an equidigital number, since it uses as much as digits as its factorization.

76669091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790500.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 76669091 is about 8756.0887958038. The cubic root of 76669091 is about 424.8217771762.

The spelling of 76669091 in words is "seventy-six million, six hundred sixty-nine thousand, ninety-one".