77675638 has 8 divisors (see below), whose sum is σ = 116630640. Its totient is φ = 38798760.

The previous prime is 77675621. The next prime is 77675639. The reversal of 77675638 is 83657677.

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

It is a junction number, because it is equal to n+sod(n) for n = 77675591 and 77675600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77675639) 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, 16978 + ... + 21061.

It is an arithmetic number, because the mean of its divisors is an integer number (14578830).

Almost surely, 2^77675638 is an apocalyptic number.

77675638 is a deficient number, since it is larger than the sum of its proper divisors (38955002).

77675638 is a wasteful number, since it uses less digits than its factorization.

77675638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39062.

The product of its digits is 1481760, while the sum is 49.

The square root of 77675638 is about 8813.3783533898. The cubic root of 77675638 is about 426.6727854211.

The spelling of 77675638 in words is "seventy-seven million, six hundred seventy-five thousand, six hundred thirty-eight".