78775036 has 24 divisors (see below), whose sum is σ = 139482000. Its totient is φ = 38926464.

The previous prime is 78775009. The next prime is 78775133. The reversal of 78775036 is 63057787.

It is a junction number, because it is equal to n+sod(n) for n = 78774983 and 78775001.

It is a congruent number.

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, 192400 + ... + 192808.

It is an arithmetic number, because the mean of its divisors is an integer number (5811750).

Almost surely, 2^78775036 is an apocalyptic number.

It is an amenable number.

78775036 is a deficient number, since it is larger than the sum of its proper divisors (60706964).

78775036 is a wasteful number, since it uses less digits than its factorization.

78775036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 78775036 is about 8875.5301813469. The cubic root of 78775036 is about 428.6763623900.

The spelling of 78775036 in words is "seventy-eight million, seven hundred seventy-five thousand, thirty-six".