640314153 has 10 divisors (see below), whose sum is σ = 956518794. Its totient is φ = 426876048.

The previous prime is 640314151. The next prime is 640314167. The reversal of 640314153 is 351413046.

640314153 is a `hidden beast` number, since 640 + 3 + 1 + 4 + 15 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 587432169 + 52881984 = 24237^2 + 7272^2 .

It is not a de Polignac number, because 640314153 - 2¹ = 640314151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (640314151) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3952476 + ... + 3952637.

Almost surely, 2^640314153 is an apocalyptic number.

It is an amenable number.

640314153 is a deficient number, since it is larger than the sum of its proper divisors (316204641).

640314153 is an equidigital number, since it uses as much as digits as its factorization.

640314153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905125 (or 7905116 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 640314153 is about 25304.4295134271. The cubic root of 640314153 is about 861.9148575563.

Adding to 640314153 its reverse (351413046), we get a palindrome (991727199).

The spelling of 640314153 in words is "six hundred forty million, three hundred fourteen thousand, one hundred fifty-three".