78619396 has 12 divisors (see below), whose sum is σ = 139130460. Its totient is φ = 38867840.

The previous prime is 78619369. The next prime is 78619399. The reversal of 78619396 is 69391687.

It can be written as a sum of positive squares in 2 ways, for example, as 8294400 + 70324996 = 2880^2 + 8386^2 .

It is not an unprimeable number, because it can be changed into a prime (78619399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110065 + ... + 110776.

It is an arithmetic number, because the mean of its divisors is an integer number (11594205).

Almost surely, 2^78619396 is an apocalyptic number.

It is an amenable number.

78619396 is a deficient number, since it is larger than the sum of its proper divisors (60511064).

78619396 is a wasteful number, since it uses less digits than its factorization.

78619396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220934 (or 220932 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 78619396 is about 8866.7579193299. The cubic root of 78619396 is about 428.3938567429.

The spelling of 78619396 in words is "seventy-eight million, six hundred nineteen thousand, three hundred ninety-six".