78107674 has 4 divisors (see below), whose sum is σ = 117161514. Its totient is φ = 39053836.

The previous prime is 78107671. The next prime is 78107677. The reversal of 78107674 is 47670187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47670187 = 43 ⋅1108609.

It is an interprime number because it is at equal distance from previous prime (78107671) and next prime (78107677).

It can be written as a sum of positive squares in only one way, i.e., 66308449 + 11799225 = 8143^2 + 3435^2 .

It is a super-2 number, since 2×78107674² = 12201617475380552, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (78107671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19526917 + ... + 19526920.

Almost surely, 2^78107674 is an apocalyptic number.

78107674 is a deficient number, since it is larger than the sum of its proper divisors (39053840).

78107674 is a wasteful number, since it uses less digits than its factorization.

78107674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39053839.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 78107674 is about 8837.8546039183. The cubic root of 78107674 is about 427.4623821532.

The spelling of 78107674 in words is "seventy-eight million, one hundred seven thousand, six hundred seventy-four".