78476766 has 8 divisors (see below), whose sum is σ = 156953544. Its totient is φ = 26158920.

The previous prime is 78476753. The next prime is 78476767. The reversal of 78476766 is 66767487.

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

78476766 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78476767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6539725 + ... + 6539736.

It is an arithmetic number, because the mean of its divisors is an integer number (19619193).

Almost surely, 2^78476766 is an apocalyptic number.

78476766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78476766 is a wasteful number, since it uses less digits than its factorization.

78476766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13079466.

The product of its digits is 2370816, while the sum is 51.

The square root of 78476766 is about 8858.7113058277. The cubic root of 78476766 is about 428.1346382543.

The spelling of 78476766 in words is "seventy-eight million, four hundred seventy-six thousand, seven hundred sixty-six".