71401187 has 8 divisors (see below), whose sum is σ = 83884080. Its totient is φ = 59916960.

The previous prime is 71401181. The next prime is 71401193. The reversal of 71401187 is 78110417.

It is an interprime number because it is at equal distance from previous prime (71401181) and next prime (71401193).

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

It is a cyclic number.

It is not a de Polignac number, because 71401187 - 2¹⁰ = 71400163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71401181) 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, 249512 + ... + 249797.

It is an arithmetic number, because the mean of its divisors is an integer number (10485510).

Almost surely, 2^71401187 is an apocalyptic number.

71401187 is a deficient number, since it is larger than the sum of its proper divisors (12482893).

71401187 is a wasteful number, since it uses less digits than its factorization.

71401187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499333.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 71401187 is about 8449.9223073351. The cubic root of 71401187 is about 414.8602364796.

The spelling of 71401187 in words is "seventy-one million, four hundred one thousand, one hundred eighty-seven".