67473561 has 16 divisors (see below), whose sum is σ = 95494464. Its totient is φ = 42230784.

The previous prime is 67473557. The next prime is 67473563. The reversal of 67473561 is 16537476.

It is not a de Polignac number, because 67473561 - 2² = 67473557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67473563) 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, 22401 + ... + 25233.

It is an arithmetic number, because the mean of its divisors is an integer number (5968404).

Almost surely, 2^67473561 is an apocalyptic number.

It is an amenable number.

67473561 is a deficient number, since it is larger than the sum of its proper divisors (28020903).

67473561 is a wasteful number, since it uses less digits than its factorization.

67473561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320.

The product of its digits is 105840, while the sum is 39.

The square root of 67473561 is about 8214.2291786874. The cubic root of 67473561 is about 407.1094751859.

The spelling of 67473561 in words is "sixty-seven million, four hundred seventy-three thousand, five hundred sixty-one".