71136087 has 8 divisors (see below), whose sum is σ = 103470720. Its totient is φ = 43112760.

The previous prime is 71136073. The next prime is 71136113. The reversal of 71136087 is 78063117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71136087 - 2⁴ = 71136071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2155639 = 71136087 / (7 + 1 + 1 + 3 + 6 + 0 + 8 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71136067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077787 + ... + 1077852.

It is an arithmetic number, because the mean of its divisors is an integer number (12933840).

Almost surely, 2^71136087 is an apocalyptic number.

71136087 is a deficient number, since it is larger than the sum of its proper divisors (32334633).

71136087 is a wasteful number, since it uses less digits than its factorization.

71136087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155653.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 71136087 is about 8434.2211851480. The cubic root of 71136087 is about 414.3461654667.

The spelling of 71136087 in words is "seventy-one million, one hundred thirty-six thousand, eighty-seven".