77881714 has 8 divisors (see below), whose sum is σ = 119672028. Its totient is φ = 37991040.

The previous prime is 77881697. The next prime is 77881717. The reversal of 77881714 is 41718877.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77880625 + 1089 = 8825^2 + 33^2 .

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

It is a super-2 number, since 2×77881714² = 12131122751155592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77881717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474807 + ... + 474970.

Almost surely, 2^77881714 is an apocalyptic number.

77881714 is a deficient number, since it is larger than the sum of its proper divisors (41790314).

77881714 is a wasteful number, since it uses less digits than its factorization.

77881714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949820.

The product of its digits is 87808, while the sum is 43.

The square root of 77881714 is about 8825.0616995010. The cubic root of 77881714 is about 427.0497778298.

The spelling of 77881714 in words is "seventy-seven million, eight hundred eighty-one thousand, seven hundred fourteen".