7007155664 has 20 divisors (see below), whose sum is σ = 13619201604. Its totient is φ = 3492523008.

The previous prime is 7007155663. The next prime is 7007155697. The reversal of 7007155664 is 4665517007.

It can be written as a sum of positive squares in 2 ways, for example, as 954315664 + 6052840000 = 30892^2 + 77800^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7007155663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685697 + ... + 695840.

Almost surely, 2^7007155664 is an apocalyptic number.

It is an amenable number.

7007155664 is a deficient number, since it is larger than the sum of its proper divisors (6612045940).

7007155664 is a wasteful number, since it uses less digits than its factorization.

7007155664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381862 (or 1381856 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 7007155664 is about 83708.7550020904. The cubic root of 7007155664 is about 1913.5827842589.

The spelling of 7007155664 in words is "seven billion, seven million, one hundred fifty-five thousand, six hundred sixty-four".