76666251 has 8 divisors (see below), whose sum is σ = 102366720. Its totient is φ = 51038312.

The previous prime is 76666231. The next prime is 76666253. The reversal of 76666251 is 15266667.

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

It is a cyclic number.

It is not a de Polignac number, because 76666251 - 2¹⁵ = 76633483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76666253) 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, 15615 + ... + 19928.

It is an arithmetic number, because the mean of its divisors is an integer number (12795840).

Almost surely, 2^76666251 is an apocalyptic number.

76666251 is a deficient number, since it is larger than the sum of its proper divisors (25700469).

76666251 is a wasteful number, since it uses less digits than its factorization.

76666251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36265.

The product of its digits is 90720, while the sum is 39.

The square root of 76666251 is about 8755.9266214376. The cubic root of 76666251 is about 424.8165316519.

The spelling of 76666251 in words is "seventy-six million, six hundred sixty-six thousand, two hundred fifty-one".