77361838 has 4 divisors (see below), whose sum is σ = 116042760. Its totient is φ = 38680918.

The previous prime is 77361743. The next prime is 77361839. The reversal of 77361838 is 83816377.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 77361794 and 77361803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77361839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19340458 + ... + 19340461.

It is an arithmetic number, because the mean of its divisors is an integer number (29010690).

Almost surely, 2^77361838 is an apocalyptic number.

77361838 is a deficient number, since it is larger than the sum of its proper divisors (38680922).

77361838 is a wasteful number, since it uses less digits than its factorization.

77361838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38680921.

The product of its digits is 169344, while the sum is 43.

The square root of 77361838 is about 8795.5578560999. The cubic root of 77361838 is about 426.0974414701.

The spelling of 77361838 in words is "seventy-seven million, three hundred sixty-one thousand, eight hundred thirty-eight".