664677093 has 8 divisors (see below), whose sum is σ = 889507456. Its totient is φ = 441482400.

The previous prime is 664677089. The next prime is 664677109. The reversal of 664677093 is 390776466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 664677093 - 2² = 664677089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664677053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407968 + ... + 409593.

It is an arithmetic number, because the mean of its divisors is an integer number (111188432).

Almost surely, 2^664677093 is an apocalyptic number.

It is an amenable number.

664677093 is a deficient number, since it is larger than the sum of its proper divisors (224830363).

664677093 is a wasteful number, since it uses less digits than its factorization.

664677093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817835.

The product of its (nonzero) digits is 1143072, while the sum is 48.

The square root of 664677093 is about 25781.3322580506. The cubic root of 664677093 is about 872.7105724600.

The spelling of 664677093 in words is "six hundred sixty-four million, six hundred seventy-seven thousand, ninety-three".