77681341 has 4 divisors (see below), whose sum is σ = 78840832. Its totient is φ = 76521852.

The previous prime is 77681339. The next prime is 77681363. The reversal of 77681341 is 14318677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14318677 = 929 ⋅15413.

It is a cyclic number.

It is not a de Polignac number, because 77681341 - 2¹ = 77681339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77681341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77681311) 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 3 ways as a sum of consecutive naturals, for example, 579645 + ... + 579778.

It is an arithmetic number, because the mean of its divisors is an integer number (19710208).

Almost surely, 2^77681341 is an apocalyptic number.

It is an amenable number.

77681341 is a deficient number, since it is larger than the sum of its proper divisors (1159491).

77681341 is a wasteful number, since it uses less digits than its factorization.

77681341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159490.

The product of its digits is 28224, while the sum is 37.

The square root of 77681341 is about 8813.7018896716. The cubic root of 77681341 is about 426.6832273710.

The spelling of 77681341 in words is "seventy-seven million, six hundred eighty-one thousand, three hundred forty-one".