77378241 has 8 divisors (see below), whose sum is σ = 108601120. Its totient is φ = 48870432.

The previous prime is 77378239. The next prime is 77378261. The reversal of 77378241 is 14287377.

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

It is not a de Polignac number, because 77378241 - 2¹ = 77378239 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 77378241.

It is not an unprimeable number, because it can be changed into a prime (77378261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678700 + ... + 678813.

It is an arithmetic number, because the mean of its divisors is an integer number (13575140).

Almost surely, 2^77378241 is an apocalyptic number.

It is an amenable number.

77378241 is a deficient number, since it is larger than the sum of its proper divisors (31222879).

77378241 is a wasteful number, since it uses less digits than its factorization.

77378241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357535.

The product of its digits is 65856, while the sum is 39.

The square root of 77378241 is about 8796.4902660095. The cubic root of 77378241 is about 426.1275544327.

The spelling of 77378241 in words is "seventy-seven million, three hundred seventy-eight thousand, two hundred forty-one".