87967905 has 32 divisors (see below), whose sum is σ = 143320320. Its totient is φ = 46068480.

The previous prime is 87967903. The next prime is 87967921. The reversal of 87967905 is 50976978.

It is not a de Polignac number, because 87967905 - 2¹ = 87967903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87967903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282700 + ... + 283010.

It is an arithmetic number, because the mean of its divisors is an integer number (4478760).

Almost surely, 2^87967905 is an apocalyptic number.

It is an amenable number.

87967905 is a deficient number, since it is larger than the sum of its proper divisors (55352415).

87967905 is a wasteful number, since it uses less digits than its factorization.

87967905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 87967905 is about 9379.1206943935. The cubic root of 87967905 is about 444.7419368105.

The spelling of 87967905 in words is "eighty-seven million, nine hundred sixty-seven thousand, nine hundred five".