78966907 has 8 divisors (see below), whose sum is σ = 83932160. Its totient is φ = 74082600.

The previous prime is 78966893. The next prime is 78966911. The reversal of 78966907 is 70966987.

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

It is a cyclic number.

It is not a de Polignac number, because 78966907 - 2¹⁵ = 78934139 is a prime.

It is a super-2 number, since 2×78966907² = 12471544802293298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78966967) 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, 18219 + ... + 22132.

It is an arithmetic number, because the mean of its divisors is an integer number (10491520).

Almost surely, 2^78966907 is an apocalyptic number.

78966907 is a deficient number, since it is larger than the sum of its proper divisors (4965253).

78966907 is a wasteful number, since it uses less digits than its factorization.

78966907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40473.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 78966907 is about 8886.3325956212. The cubic root of 78966907 is about 429.0241200806.

The spelling of 78966907 in words is "seventy-eight million, nine hundred sixty-six thousand, nine hundred seven".