78083361 has 12 divisors (see below), whose sum is σ = 113373988. Its totient is φ = 51784704.

The previous prime is 78083347. The next prime is 78083371. The reversal of 78083361 is 16338087.

It can be written as a sum of positive squares in 2 ways, for example, as 57289761 + 20793600 = 7569^2 + 4560^2 .

It is not a de Polignac number, because 78083361 - 2⁶ = 78083297 is a prime.

It is a super-2 number, since 2×78083361² = 12194022530112642, 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 (78083371) 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 11 ways as a sum of consecutive naturals, for example, 20740 + ... + 24213.

Almost surely, 2^78083361 is an apocalyptic number.

It is an amenable number.

78083361 is a deficient number, since it is larger than the sum of its proper divisors (35290627).

78083361 is a wasteful number, since it uses less digits than its factorization.

78083361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45152 (or 45149 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 78083361 is about 8836.4789933548. The cubic root of 78083361 is about 427.4180247045.

The spelling of 78083361 in words is "seventy-eight million, eighty-three thousand, three hundred sixty-one".