78385007 has 2 divisors, whose sum is σ = 78385008. Its totient is φ = 78385006.

The previous prime is 78385003. The next prime is 78385031. The reversal of 78385007 is 70058387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78385007 - 2² = 78385003 is a prime.

It is a super-2 number, since 2×78385007² = 12288418644780098, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4580687 and since 78385007 and 4580687 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78385003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39192503 + 39192504.

It is an arithmetic number, because the mean of its divisors is an integer number (39192504).

Almost surely, 2^78385007 is an apocalyptic number.

78385007 is a deficient number, since it is larger than the sum of its proper divisors (1).

78385007 is an equidigital number, since it uses as much as digits as its factorization.

78385007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 78385007 is about 8853.5307646159. The cubic root of 78385007 is about 427.9677076256.

The spelling of 78385007 in words is "seventy-eight million, three hundred eighty-five thousand, seven".