74640677677 has 2 divisors, whose sum is σ = 74640677678. Its totient is φ = 74640677676.

The previous prime is 74640677663. The next prime is 74640677693. The reversal of 74640677677 is 77677604647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40895355076 + 33745322601 = 202226^2 + 183699^2 .

It is an emirp because it is prime and its reverse (77677604647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74640677677 - 2³¹ = 72493194029 is a prime.

It is a super-2 number, since 2×74640677677² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74640677647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37320338838 + 37320338839.

It is an arithmetic number, because the mean of its divisors is an integer number (37320338839).

Almost surely, 2^74640677677 is an apocalyptic number.

It is an amenable number.

74640677677 is a deficient number, since it is larger than the sum of its proper divisors (1).

74640677677 is an equidigital number, since it uses as much as digits as its factorization.

74640677677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58084992, while the sum is 61.

The spelling of 74640677677 in words is "seventy-four billion, six hundred forty million, six hundred seventy-seven thousand, six hundred seventy-seven".