664425010 has 16 divisors (see below), whose sum is σ = 1196458200. Its totient is φ = 265660416.

The previous prime is 664425007. The next prime is 664425017. The reversal of 664425010 is 10524466.

It can be written as a sum of positive squares in 4 ways, for example, as 407111329 + 257313681 = 20177^2 + 16041^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 664425010.

It is not an unprimeable number, because it can be changed into a prime (664425017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14536 + ... + 39244.

Almost surely, 2^664425010 is an apocalyptic number.

664425010 is a deficient number, since it is larger than the sum of its proper divisors (532033190).

664425010 is a wasteful number, since it uses less digits than its factorization.

664425010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27405.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 664425010 is about 25776.4429276035. The cubic root of 664425010 is about 872.6002315045.

Adding to 664425010 its reverse (10524466), we get a palindrome (674949476).

The spelling of 664425010 in words is "six hundred sixty-four million, four hundred twenty-five thousand, ten".