664053757 has 8 divisors (see below), whose sum is σ = 669094272. Its totient is φ = 659022000.

The previous prime is 664053739. The next prime is 664053787. The reversal of 664053757 is 757350466.

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 664053757 - 2¹⁵ = 664020989 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 (664053727) by changing a digit.

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, 277707 + ... + 280087.

It is an arithmetic number, because the mean of its divisors is an integer number (83636784).

Almost surely, 2^664053757 is an apocalyptic number.

It is an amenable number.

664053757 is a deficient number, since it is larger than the sum of its proper divisors (5040515).

664053757 is a wasteful number, since it uses less digits than its factorization.

664053757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379.

The product of its (nonzero) digits is 529200, while the sum is 43.

The square root of 664053757 is about 25769.2405204344. The cubic root of 664053757 is about 872.4376770124.

The spelling of 664053757 in words is "six hundred sixty-four million, fifty-three thousand, seven hundred fifty-seven".