71369563 has 4 divisors (see below), whose sum is σ = 71519040. Its totient is φ = 71220088.

The previous prime is 71369537. The next prime is 71369569. The reversal of 71369563 is 36596317.

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 71369563 - 2²⁵ = 37815131 is a prime.

It is a super-2 number, since 2×71369563² = 10187229045621938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71369569) 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, 74020 + ... + 74977.

It is an arithmetic number, because the mean of its divisors is an integer number (17879760).

Almost surely, 2^71369563 is an apocalyptic number.

71369563 is a deficient number, since it is larger than the sum of its proper divisors (149477).

71369563 is a wasteful number, since it uses less digits than its factorization.

71369563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149476.

The product of its digits is 102060, while the sum is 40.

The square root of 71369563 is about 8448.0508402826. The cubic root of 71369563 is about 414.7989794331.

The spelling of 71369563 in words is "seventy-one million, three hundred sixty-nine thousand, five hundred sixty-three".