6400069653 has 16 divisors (see below), whose sum is σ = 8881859520. Its totient is φ = 4094302464.

The previous prime is 6400069639. The next prime is 6400069667. The reversal of 6400069653 is 3569600046.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6400069639) and next prime (6400069667).

It is not a de Polignac number, because 6400069653 - 2¹² = 6400065557 is a prime.

It is a super-4 number, since 4×6400069653⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400069633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211476 + ... + 239837.

It is an arithmetic number, because the mean of its divisors is an integer number (555116220).

Almost surely, 2^6400069653 is an apocalyptic number.

It is an amenable number.

6400069653 is a deficient number, since it is larger than the sum of its proper divisors (2481789867).

6400069653 is a wasteful number, since it uses less digits than its factorization.

6400069653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451508.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 6400069653 is about 80000.4353300655. The cubic root of 6400069653 is about 1856.6422688496.

Adding to 6400069653 its reverse (3569600046), we get a palindrome (9969669699).

The spelling of 6400069653 in words is "six billion, four hundred million, sixty-nine thousand, six hundred fifty-three".