664149753 has 16 divisors (see below), whose sum is σ = 992956800. Its totient is φ = 438702480.

The previous prime is 664149751. The next prime is 664149757. The reversal of 664149753 is 357941466.

It is not a de Polignac number, because 664149753 - 2¹ = 664149751 is a prime.

It is a super-2 number, since 2×664149753² = 882189788819922018, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 664149699 and 664149708.

It is not an unprimeable number, because it can be changed into a prime (664149751) 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, 109893 + ... + 115778.

It is an arithmetic number, because the mean of its divisors is an integer number (62059800).

Almost surely, 2^664149753 is an apocalyptic number.

It is an amenable number.

664149753 is a deficient number, since it is larger than the sum of its proper divisors (328807047).

664149753 is a wasteful number, since it uses less digits than its factorization.

664149753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225789 (or 225783 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 664149753 is about 25771.1030613748. The cubic root of 664149753 is about 872.4797150206.

It can be divided in two parts, 66414 and 9753, that added together give a palindrome (76167).

The spelling of 664149753 in words is "six hundred sixty-four million, one hundred forty-nine thousand, seven hundred fifty-three".