7007700640 has 24 divisors (see below), whose sum is σ = 16555693140. Its totient is φ = 2803080192.

The previous prime is 7007700569. The next prime is 7007700659. The reversal of 7007700640 is 460077007.

It can be written as a sum of positive squares in 2 ways, for example, as 5805830416 + 1201870224 = 76196^2 + 34668^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21898905 + ... + 21899224.

Almost surely, 2^7007700640 is an apocalyptic number.

It is an amenable number.

7007700640 is an abundant number, since it is smaller than the sum of its proper divisors (9547992500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7007700640 is a wasteful number, since it uses less digits than its factorization.

7007700640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43798144 (or 43798136 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 7007700640 is about 83712.0101299688. The cubic root of 7007700640 is about 1913.6323921030.

Adding to 7007700640 its reverse (460077007), we get a palindrome (7467777647).

The spelling of 7007700640 in words is "seven billion, seven million, seven hundred thousand, six hundred forty".