78669134 has 32 divisors (see below), whose sum is σ = 125239296. Its totient is φ = 37013760.

The previous prime is 78669127. The next prime is 78669163. The reversal of 78669134 is 43196687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619379 + ... + 619505.

It is an arithmetic number, because the mean of its divisors is an integer number (3913728).

Almost surely, 2^78669134 is an apocalyptic number.

78669134 is a deficient number, since it is larger than the sum of its proper divisors (46570162).

78669134 is a wasteful number, since it uses less digits than its factorization.

78669134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its digits is 217728, while the sum is 44.

The square root of 78669134 is about 8869.5622214402. The cubic root of 78669134 is about 428.4841778044.

The spelling of 78669134 in words is "seventy-eight million, six hundred sixty-nine thousand, one hundred thirty-four".