77343641 has 8 divisors (see below), whose sum is σ = 81423360. Its totient is φ = 73323712.

The previous prime is 77343619. The next prime is 77343647. The reversal of 77343641 is 14634377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77343641 - 2¹⁸ = 77081497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77343647) 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 7 ways as a sum of consecutive naturals, for example, 12281 + ... + 17478.

It is an arithmetic number, because the mean of its divisors is an integer number (10177920).

Almost surely, 2^77343641 is an apocalyptic number.

It is an amenable number.

77343641 is a deficient number, since it is larger than the sum of its proper divisors (4079719).

77343641 is a wasteful number, since it uses less digits than its factorization.

77343641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29895.

The product of its digits is 42336, while the sum is 35.

The square root of 77343641 is about 8794.5233526326. The cubic root of 77343641 is about 426.0640300648.

The spelling of 77343641 in words is "seventy-seven million, three hundred forty-three thousand, six hundred forty-one".