77163842 has 16 divisors (see below), whose sum is σ = 132950400. Its totient is φ = 32902848.

The previous prime is 77163839. The next prime is 77163859. The reversal of 77163842 is 24836177.

It is a junction number, because it is equal to n+sod(n) for n = 77163796 and 77163805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11063 + ... + 16634.

It is an arithmetic number, because the mean of its divisors is an integer number (8309400).

Almost surely, 2^77163842 is an apocalyptic number.

77163842 is a deficient number, since it is larger than the sum of its proper divisors (55786558).

77163842 is a wasteful number, since it uses less digits than its factorization.

77163842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27905.

The product of its digits is 56448, while the sum is 38.

The square root of 77163842 is about 8784.2951908505. The cubic root of 77163842 is about 425.7336201192.

The spelling of 77163842 in words is "seventy-seven million, one hundred sixty-three thousand, eight hundred forty-two".