664776355 has 8 divisors (see below), whose sum is σ = 797962752. Its totient is φ = 531667008.

The previous prime is 664776323. The next prime is 664776361. The reversal of 664776355 is 553677466.

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

It is a cyclic number.

It is not a de Polignac number, because 664776355 - 2⁵ = 664776323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664776299 and 664776308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1822 + ... + 36508.

It is an arithmetic number, because the mean of its divisors is an integer number (99745344).

Almost surely, 2^664776355 is an apocalyptic number.

664776355 is a deficient number, since it is larger than the sum of its proper divisors (133186397).

664776355 is a wasteful number, since it uses less digits than its factorization.

664776355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38525.

The product of its digits is 3175200, while the sum is 49.

The square root of 664776355 is about 25783.2572612539. The cubic root of 664776355 is about 872.7540134460.

The spelling of 664776355 in words is "six hundred sixty-four million, seven hundred seventy-six thousand, three hundred fifty-five".