78866007 has 8 divisors (see below), whose sum is σ = 114714240. Its totient is φ = 47797560.

The previous prime is 78865991. The next prime is 78866023. The reversal of 78866007 is 70066887.

It is an interprime number because it is at equal distance from previous prime (78865991) and next prime (78866023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78866007 - 2⁴ = 78865991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78866007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78866087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194907 + ... + 1194972.

It is an arithmetic number, because the mean of its divisors is an integer number (14339280).

Almost surely, 2^78866007 is an apocalyptic number.

78866007 is a deficient number, since it is larger than the sum of its proper divisors (35848233).

78866007 is a wasteful number, since it uses less digits than its factorization.

78866007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389893.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 78866007 is about 8880.6535232493. The cubic root of 78866007 is about 428.8413136123.

It can be divided in two parts, 788 and 66007, that added together give a triangular number (66795 = T₃₆₅).

The spelling of 78866007 in words is "seventy-eight million, eight hundred sixty-six thousand, seven".