78375807 has 6 divisors (see below), whose sum is σ = 113209512. Its totient is φ = 52250532.

The previous prime is 78375769. The next prime is 78375811. The reversal of 78375807 is 70857387.

It is not a de Polignac number, because 78375807 - 2⁷ = 78375679 is a prime.

It is a super-2 number, since 2×78375807² = 12285534245802498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78375827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4354203 + ... + 4354220.

It is an arithmetic number, because the mean of its divisors is an integer number (18868252).

Almost surely, 2^78375807 is an apocalyptic number.

78375807 is a deficient number, since it is larger than the sum of its proper divisors (34833705).

78375807 is a wasteful number, since it uses less digits than its factorization.

78375807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8708429 (or 8708426 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 78375807 is about 8853.0111826429. The cubic root of 78375807 is about 427.9509635351.

The spelling of 78375807 in words is "seventy-eight million, three hundred seventy-five thousand, eight hundred seven".