77686801 has 16 divisors (see below), whose sum is σ = 85737600. Its totient is φ = 70063488.

The previous prime is 77686793. The next prime is 77686813. The reversal of 77686801 is 10868677.

It is not a de Polignac number, because 77686801 - 2³ = 77686793 is a prime.

It is a super-2 number, since 2×77686801² = 12070478099227202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77686871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169765 + ... + 170221.

It is an arithmetic number, because the mean of its divisors is an integer number (5358600).

Almost surely, 2^77686801 is an apocalyptic number.

It is an amenable number.

77686801 is a deficient number, since it is larger than the sum of its proper divisors (8050799).

77686801 is a wasteful number, since it uses less digits than its factorization.

77686801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 77686801 is about 8814.0116292186. The cubic root of 77686801 is about 426.6932239193.

It can be divided in two parts, 77686 and 801, that added together give a palindrome (78487).

The spelling of 77686801 in words is "seventy-seven million, six hundred eighty-six thousand, eight hundred one".