78034361 has 2 divisors, whose sum is σ = 78034362. Its totient is φ = 78034360.

The previous prime is 78034309. The next prime is 78034393. The reversal of 78034361 is 16343087.

It is an a-pointer prime, because the next prime (78034393) can be obtained adding 78034361 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60762025 + 17272336 = 7795^2 + 4156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78034361 is a prime.

It is a super-2 number, since 2×78034361² = 12178722993356642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (78034661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39017180 + 39017181.

It is an arithmetic number, because the mean of its divisors is an integer number (39017181).

Almost surely, 2^78034361 is an apocalyptic number.

It is an amenable number.

78034361 is a deficient number, since it is larger than the sum of its proper divisors (1).

78034361 is an equidigital number, since it uses as much as digits as its factorization.

78034361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 78034361 is about 8833.7059606940. The cubic root of 78034361 is about 427.3285994826.

The spelling of 78034361 in words is "seventy-eight million, thirty-four thousand, three hundred sixty-one".