76660477 has 2 divisors, whose sum is σ = 76660478. Its totient is φ = 76660476.

The previous prime is 76660457. The next prime is 76660517. The reversal of 76660477 is 77406667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74753316 + 1907161 = 8646^2 + 1381^2 .

It is a cyclic number.

It is not a de Polignac number, because 76660477 - 2⁷ = 76660349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76660457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38330238 + 38330239.

It is an arithmetic number, because the mean of its divisors is an integer number (38330239).

Almost surely, 2^76660477 is an apocalyptic number.

It is an amenable number.

76660477 is a deficient number, since it is larger than the sum of its proper divisors (1).

76660477 is an equidigital number, since it uses as much as digits as its factorization.

76660477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 76660477 is about 8755.5968957005. The cubic root of 76660477 is about 424.8058665843.

The spelling of 76660477 in words is "seventy-six million, six hundred sixty thousand, four hundred seventy-seven".