87768026 has 4 divisors (see below), whose sum is σ = 131652042. Its totient is φ = 43884012.

The previous prime is 87768013. The next prime is 87768029. The reversal of 87768026 is 62086778.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80982001 + 6786025 = 8999^2 + 2605^2 .

It is not an unprimeable number, because it can be changed into a prime (87768029) 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 as a sum of consecutive naturals, namely, 21942005 + ... + 21942008.

Almost surely, 2^87768026 is an apocalyptic number.

87768026 is a deficient number, since it is larger than the sum of its proper divisors (43884016).

87768026 is a wasteful number, since it uses less digits than its factorization.

87768026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43884015.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 87768026 is about 9368.4591048902. The cubic root of 87768026 is about 444.4048366417.

The spelling of 87768026 in words is "eighty-seven million, seven hundred sixty-eight thousand, twenty-six".