78104629 has 4 divisors (see below), whose sum is σ = 78440076. Its totient is φ = 77769184.

The previous prime is 78104617. The next prime is 78104651. The reversal of 78104629 is 92640187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92640187 = 131 ⋅707177.

It can be written as a sum of positive squares in 2 ways, for example, as 35724529 + 42380100 = 5977^2 + 6510^2 .

It is a cyclic number.

It is not a de Polignac number, because 78104629 - 2⁵ = 78104597 is a prime.

It is a super-2 number, since 2×78104629² = 12200666142455282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78104029) 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 in 3 ways as a sum of consecutive naturals, for example, 167374 + ... + 167839.

It is an arithmetic number, because the mean of its divisors is an integer number (19610019).

Almost surely, 2^78104629 is an apocalyptic number.

It is an amenable number.

78104629 is a deficient number, since it is larger than the sum of its proper divisors (335447).

78104629 is a wasteful number, since it uses less digits than its factorization.

78104629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335446.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 78104629 is about 8837.6823319239. The cubic root of 78104629 is about 427.4568272579.

The spelling of 78104629 in words is "seventy-eight million, one hundred four thousand, six hundred twenty-nine".