78963806 has 4 divisors (see below), whose sum is σ = 118445712. Its totient is φ = 39481902.

The previous prime is 78963803. The next prime is 78963869. The reversal of 78963806 is 60836987.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78963803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19740950 + ... + 19740953.

It is an arithmetic number, because the mean of its divisors is an integer number (29611428).

Almost surely, 2^78963806 is an apocalyptic number.

78963806 is a deficient number, since it is larger than the sum of its proper divisors (39481906).

78963806 is a wasteful number, since it uses less digits than its factorization.

78963806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39481905.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 78963806 is about 8886.1581124803. The cubic root of 78963806 is about 429.0185041364.

The spelling of 78963806 in words is "seventy-eight million, nine hundred sixty-three thousand, eight hundred six".