72087671 has 4 divisors (see below), whose sum is σ = 72105600. Its totient is φ = 72069744.

The previous prime is 72087647. The next prime is 72087677. The reversal of 72087671 is 17678027.

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

It is a cyclic number.

It is not a de Polignac number, because 72087671 - 2⁶ = 72087607 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 (72087677) 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, 170 + ... + 12008.

It is an arithmetic number, because the mean of its divisors is an integer number (18026400).

Almost surely, 2^72087671 is an apocalyptic number.

72087671 is a deficient number, since it is larger than the sum of its proper divisors (17929).

72087671 is a wasteful number, since it uses less digits than its factorization.

72087671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17928.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 72087671 is about 8490.4458657953. The cubic root of 72087671 is about 416.1855507776.

The spelling of 72087671 in words is "seventy-two million, eighty-seven thousand, six hundred seventy-one".