56673309 has 16 divisors (see below), whose sum is σ = 94210560. Its totient is φ = 29440560.

The previous prime is 56673283. The next prime is 56673347. The reversal of 56673309 is 90337665.

It is not a de Polignac number, because 56673309 - 2⁵ = 56673277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56673349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122439 + ... + 122900.

It is an arithmetic number, because the mean of its divisors is an integer number (5888160).

Almost surely, 2^56673309 is an apocalyptic number.

It is an amenable number.

56673309 is a deficient number, since it is larger than the sum of its proper divisors (37537251).

56673309 is a wasteful number, since it uses less digits than its factorization.

56673309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245360.

The product of its (nonzero) digits is 102060, while the sum is 39.

The square root of 56673309 is about 7528.1677053583. The cubic root of 56673309 is about 384.1134579562.

The spelling of 56673309 in words is "fifty-six million, six hundred seventy-three thousand, three hundred nine".