87793013 has 16 divisors (see below), whose sum is σ = 112129920. Its totient is φ = 66739200.

The previous prime is 87793009. The next prime is 87793031. The reversal of 87793013 is 31039778.

It is a happy number.

It is not a de Polignac number, because 87793013 - 2² = 87793009 is a prime.

It is a super-2 number, since 2×87793013² = 15415226263236338, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87793033) 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 in 15 ways as a sum of consecutive naturals, for example, 10748 + ... + 17061.

It is an arithmetic number, because the mean of its divisors is an integer number (7008120).

Almost surely, 2^87793013 is an apocalyptic number.

It is an amenable number.

87793013 is a deficient number, since it is larger than the sum of its proper divisors (24336907).

87793013 is a wasteful number, since it uses less digits than its factorization.

87793013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27868.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 87793013 is about 9369.7925804150. The cubic root of 87793013 is about 444.4470057190.

The spelling of 87793013 in words is "eighty-seven million, seven hundred ninety-three thousand, thirteen".