78571563 has 16 divisors (see below), whose sum is σ = 120001536. Its totient is φ = 44795520.

The previous prime is 78571523. The next prime is 78571567. The reversal of 78571563 is 36517587.

It is not a de Polignac number, because 78571563 - 2¹³ = 78563371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78571567) 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, 5683 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (7500096).

Almost surely, 2^78571563 is an apocalyptic number.

78571563 is a deficient number, since it is larger than the sum of its proper divisors (41429973).

78571563 is a wasteful number, since it uses less digits than its factorization.

78571563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8554.

The product of its digits is 176400, while the sum is 42.

The square root of 78571563 is about 8864.0601870700. The cubic root of 78571563 is about 428.3069591005.

The spelling of 78571563 in words is "seventy-eight million, five hundred seventy-one thousand, five hundred sixty-three".