87940711 has 16 divisors (see below), whose sum is σ = 95484960. Its totient is φ = 80686080.

The previous prime is 87940709. The next prime is 87940717. The reversal of 87940711 is 11704978.

It is not a de Polignac number, because 87940711 - 2¹ = 87940709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87940717) 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, 141760 + ... + 142378.

It is an arithmetic number, because the mean of its divisors is an integer number (5967810).

Almost surely, 2^87940711 is an apocalyptic number.

87940711 is a deficient number, since it is larger than the sum of its proper divisors (7544249).

87940711 is a wasteful number, since it uses less digits than its factorization.

87940711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 87940711 is about 9377.6708728767. The cubic root of 87940711 is about 444.6961035842.

The spelling of 87940711 in words is "eighty-seven million, nine hundred forty thousand, seven hundred eleven".