77221714 has 16 divisors (see below), whose sum is σ = 117271800. Its totient is φ = 38133760.

The previous prime is 77221709. The next prime is 77221717. The reversal of 77221714 is 41712277.

It can be written as a sum of positive squares in 4 ways, for example, as 20475625 + 56746089 = 4525^2 + 7533^2 .

It is a super-2 number, since 2×77221714² = 11926386226195592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77221717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101094 + ... + 101854.

Almost surely, 2^77221714 is an apocalyptic number.

77221714 is a deficient number, since it is larger than the sum of its proper divisors (40050086).

77221714 is a wasteful number, since it uses less digits than its factorization.

77221714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325.

The product of its digits is 5488, while the sum is 31.

The square root of 77221714 is about 8787.5886339769. The cubic root of 77221714 is about 425.8400253066.

The spelling of 77221714 in words is "seventy-seven million, two hundred twenty-one thousand, seven hundred fourteen".