87649011 has 6 divisors (see below), whose sum is σ = 126604140. Its totient is φ = 58432668.

The previous prime is 87648989. The next prime is 87649019. The reversal of 87649011 is 11094678.

87649011 is a `hidden beast` number, since 8 + 7 + 649 + 0 + 1 + 1 = 666.

It is not a de Polignac number, because 87649011 - 2⁹ = 87648499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87649019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4869381 + ... + 4869398.

It is an arithmetic number, because the mean of its divisors is an integer number (21100690).

Almost surely, 2^87649011 is an apocalyptic number.

87649011 is a deficient number, since it is larger than the sum of its proper divisors (38955129).

87649011 is a wasteful number, since it uses less digits than its factorization.

87649011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9738785 (or 9738782 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 87649011 is about 9362.1050517498. The cubic root of 87649011 is about 444.2038721635.

The spelling of 87649011 in words is "eighty-seven million, six hundred forty-nine thousand, eleven".