4000624664 has 8 divisors (see below), whose sum is σ = 7501171260. Its totient is φ = 2000312328.

The previous prime is 4000624657. The next prime is 4000624697. The reversal of 4000624664 is 4664260004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×4000624664² = 32009995404410225792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4000624664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250039034 + ... + 250039049.

Almost surely, 2^4000624664 is an apocalyptic number.

It is an amenable number.

4000624664 is a deficient number, since it is larger than the sum of its proper divisors (3500546596).

4000624664 is a wasteful number, since it uses less digits than its factorization.

4000624664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500078089 (or 500078085 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 4000624664 is about 63250.4914131108. The cubic root of 4000624664 is about 1587.4836803580.

Adding to 4000624664 its reverse (4664260004), we get a palindrome (8664884668).

The spelling of 4000624664 in words is "four billion, six hundred twenty-four thousand, six hundred sixty-four".