77694007 has 2 divisors, whose sum is σ = 77694008. Its totient is φ = 77694006.

The previous prime is 77693999. The next prime is 77694011. The reversal of 77694007 is 70049677.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77694007 - 2³ = 77693999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77694017) 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 as a sum of consecutive naturals, namely, 38847003 + 38847004.

It is an arithmetic number, because the mean of its divisors is an integer number (38847004).

Almost surely, 2^77694007 is an apocalyptic number.

77694007 is a deficient number, since it is larger than the sum of its proper divisors (1).

77694007 is an equidigital number, since it uses as much as digits as its factorization.

77694007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 77694007 is about 8814.4204006843. The cubic root of 77694007 is about 426.7064164491.

The spelling of 77694007 in words is "seventy-seven million, six hundred ninety-four thousand, seven".