71087001 has 4 divisors (see below), whose sum is σ = 94782672. Its totient is φ = 47391332.

The previous prime is 71086993. The next prime is 71087011. The reversal of 71087001 is 10078017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71087001 - 2³ = 71086993 is a prime.

It is a super-2 number, since 2×71087001² = 10106723422348002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71087011) 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, 11847831 + ... + 11847836.

It is an arithmetic number, because the mean of its divisors is an integer number (23695668).

Almost surely, 2^71087001 is an apocalyptic number.

It is an amenable number.

71087001 is a deficient number, since it is larger than the sum of its proper divisors (23695671).

71087001 is a wasteful number, since it uses less digits than its factorization.

71087001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23695670.

The product of its (nonzero) digits is 392, while the sum is 24.

The square root of 71087001 is about 8431.3107521903. The cubic root of 71087001 is about 414.2508398422.

The spelling of 71087001 in words is "seventy-one million, eighty-seven thousand, one".