76668601 has 2 divisors, whose sum is σ = 76668602. Its totient is φ = 76668600.

The previous prime is 76668593. The next prime is 76668619. The reversal of 76668601 is 10686667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74373376 + 2295225 = 8624^2 + 1515^2 .

It is an emirp because it is prime and its reverse (10686667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76668601 - 2³ = 76668593 is a prime.

It is not a weakly prime, because it can be changed into another prime (76668661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38334300 + 38334301.

It is an arithmetic number, because the mean of its divisors is an integer number (38334301).

Almost surely, 2^76668601 is an apocalyptic number.

It is an amenable number.

76668601 is a deficient number, since it is larger than the sum of its proper divisors (1).

76668601 is an equidigital number, since it uses as much as digits as its factorization.

76668601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 76668601 is about 8756.0608152296. The cubic root of 76668601 is about 424.8208721478.

The spelling of 76668601 in words is "seventy-six million, six hundred sixty-eight thousand, six hundred one".