78476851 has 8 divisors (see below), whose sum is σ = 82255104. Its totient is φ = 74729160.

The previous prime is 78476843. The next prime is 78476857. The reversal of 78476851 is 15867487.

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 78476851 - 2³ = 78476843 is a prime.

It is a super-2 number, since 2×78476851² = 12317232285752402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78476857) 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, 2295 + ... + 12736.

It is an arithmetic number, because the mean of its divisors is an integer number (10281888).

Almost surely, 2^78476851 is an apocalyptic number.

78476851 is a deficient number, since it is larger than the sum of its proper divisors (3778253).

78476851 is a wasteful number, since it uses less digits than its factorization.

78476851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15281.

The product of its digits is 376320, while the sum is 46.

The square root of 78476851 is about 8858.7161033640. The cubic root of 78476851 is about 428.1347928284.

The spelling of 78476851 in words is "seventy-eight million, four hundred seventy-six thousand, eight hundred fifty-one".