78266313 has 12 divisors (see below), whose sum is σ = 113866480. Its totient is φ = 51801336.

The previous prime is 78266299. The next prime is 78266329. The reversal of 78266313 is 31366287.

It is a happy number.

It is not a de Polignac number, because 78266313 - 2⁵ = 78266281 is a prime.

It is a super-2 number, since 2×78266313² = 12251231501227938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78264313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30031 + ... + 32532.

Almost surely, 2^78266313 is an apocalyptic number.

It is an amenable number.

78266313 is a deficient number, since it is larger than the sum of its proper divisors (35600167).

78266313 is a wasteful number, since it uses less digits than its factorization.

78266313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62708 (or 62705 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 78266313 is about 8846.8250237020. The cubic root of 78266313 is about 427.7515827041.

The spelling of 78266313 in words is "seventy-eight million, two hundred sixty-six thousand, three hundred thirteen".