78674189 has 8 divisors (see below), whose sum is σ = 85905120. Its totient is φ = 71456400.

The previous prime is 78674179. The next prime is 78674221. The reversal of 78674189 is 98147687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78674189 - 2¹² = 78670093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78674149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12602 + ... + 17780.

It is an arithmetic number, because the mean of its divisors is an integer number (10738140).

Almost surely, 2^78674189 is an apocalyptic number.

It is an amenable number.

78674189 is a deficient number, since it is larger than the sum of its proper divisors (7230931).

78674189 is a wasteful number, since it uses less digits than its factorization.

78674189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571.

The product of its digits is 677376, while the sum is 50.

The square root of 78674189 is about 8869.8471801943. The cubic root of 78674189 is about 428.4933552332.

The spelling of 78674189 in words is "seventy-eight million, six hundred seventy-four thousand, one hundred eighty-nine".