80643475 has 36 divisors (see below), whose sum is σ = 112211568. Its totient is φ = 57428800.

The previous prime is 80643463. The next prime is 80643481. The reversal of 80643475 is 57434608.

It is not a de Polignac number, because 80643475 - 2²³ = 72254867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 160074 + ... + 160576.

It is an arithmetic number, because the mean of its divisors is an integer number (3116988).

Almost surely, 2^80643475 is an apocalyptic number.

80643475 is a deficient number, since it is larger than the sum of its proper divisors (31568093).

80643475 is a wasteful number, since it uses less digits than its factorization.

80643475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 80643475 is about 8980.1712121763. The cubic root of 80643475 is about 432.0391250430.

It can be divided in two parts, 80643 and 475, that added together give a palindrome (81118).

The spelling of 80643475 in words is "eighty million, six hundred forty-three thousand, four hundred seventy-five".