71404563 has 16 divisors (see below), whose sum is σ = 99044352. Its totient is φ = 45708000.

The previous prime is 71404559. The next prime is 71404589. The reversal of 71404563 is 36540417.

It is not a de Polignac number, because 71404563 - 2² = 71404559 is a prime.

It is a super-2 number, since 2×71404563² = 10197223234441938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71404563.

It is not an unprimeable number, because it can be changed into a prime (71404163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9253 + ... + 15113.

It is an arithmetic number, because the mean of its divisors is an integer number (6190272).

Almost surely, 2^71404563 is an apocalyptic number.

71404563 is a deficient number, since it is larger than the sum of its proper divisors (27639789).

71404563 is a wasteful number, since it uses less digits than its factorization.

71404563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 71404563 is about 8450.1220701242. The cubic root of 71404563 is about 414.8667748680.

The spelling of 71404563 in words is "seventy-one million, four hundred four thousand, five hundred sixty-three".