71000437 has 4 divisors (see below), whose sum is σ = 71477100. Its totient is φ = 70523776.

The previous prime is 71000429. The next prime is 71000453. The reversal of 71000437 is 73400017.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3530641 + 67469796 = 1879^2 + 8214^2 .

It is a cyclic number.

It is not a de Polignac number, because 71000437 - 2³ = 71000429 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 (71000407) 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, 238108 + ... + 238405.

It is an arithmetic number, because the mean of its divisors is an integer number (17869275).

Almost surely, 2^71000437 is an apocalyptic number.

It is an amenable number.

71000437 is a deficient number, since it is larger than the sum of its proper divisors (476663).

71000437 is a wasteful number, since it uses less digits than its factorization.

71000437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476662.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 71000437 is about 8426.1757043157. The cubic root of 71000437 is about 414.0826244886.

The spelling of 71000437 in words is "seventy-one million, four hundred thirty-seven", and thus it is an aban number.