87613671 has 4 divisors (see below), whose sum is σ = 116818232. Its totient is φ = 58409112.

The previous prime is 87613667. The next prime is 87613697. The reversal of 87613671 is 17631678.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87613671 - 2² = 87613667 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 (87613571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14602276 + ... + 14602281.

It is an arithmetic number, because the mean of its divisors is an integer number (29204558).

Almost surely, 2^87613671 is an apocalyptic number.

87613671 is a deficient number, since it is larger than the sum of its proper divisors (29204561).

87613671 is a wasteful number, since it uses less digits than its factorization.

87613671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29204560.

The product of its digits is 42336, while the sum is 39.

The square root of 87613671 is about 9360.2174654225. The cubic root of 87613671 is about 444.1441632747.

The spelling of 87613671 in words is "eighty-seven million, six hundred thirteen thousand, six hundred seventy-one".