78361306 has 16 divisors (see below), whose sum is σ = 121840200. Its totient is φ = 37753408.

The previous prime is 78361303. The next prime is 78361321. The reversal of 78361306 is 60316387.

It can be written as a sum of positive squares in 4 ways, for example, as 45010681 + 33350625 = 6709^2 + 5775^2 .

It is a super-3 number, since 3×78361306³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78361303) 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, 36840 + ... + 38908.

Almost surely, 2^78361306 is an apocalyptic number.

78361306 is a deficient number, since it is larger than the sum of its proper divisors (43478894).

78361306 is a wasteful number, since it uses less digits than its factorization.

78361306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 78361306 is about 8852.1921578782. The cubic root of 78361306 is about 427.9245689119.

The spelling of 78361306 in words is "seventy-eight million, three hundred sixty-one thousand, three hundred six".