78065074 has 4 divisors (see below), whose sum is σ = 117097614. Its totient is φ = 39032536.

The previous prime is 78065063. The next prime is 78065149. The reversal of 78065074 is 47056087.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77316849 + 748225 = 8793^2 + 865^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19516267 + ... + 19516270.

Almost surely, 2^78065074 is an apocalyptic number.

78065074 is a deficient number, since it is larger than the sum of its proper divisors (39032540).

78065074 is a wasteful number, since it uses less digits than its factorization.

78065074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39032539.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 78065074 is about 8835.4441880417. Note that the first 3 decimals coincide. The cubic root of 78065074 is about 427.3846552236.

It can be divided in two parts, 7806 and 5074, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 78065074 in words is "seventy-eight million, sixty-five thousand, seventy-four".