7103640656 has 160 divisors (see below), whose sum is σ = 17225564160. Its totient is φ = 2769873408.

The previous prime is 7103640631. The next prime is 7103640679. The reversal of 7103640656 is 6560463017.

It is a happy number.

7103640656 is nontrivially palindromic in base 3.

It is a super-2 number, since 2×7103640656² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6534545 + ... + 6535631.

It is an arithmetic number, because the mean of its divisors is an integer number (107659776).

Almost surely, 2^7103640656 is an apocalyptic number.

7103640656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7103640656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8612782080).

7103640656 is an abundant number, since it is smaller than the sum of its proper divisors (10121923504).

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

7103640656 is a wasteful number, since it uses less digits than its factorization.

7103640656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 7103640656 is about 84283.0982819213. The cubic root of 7103640656 is about 1922.3257998402.

The spelling of 7103640656 in words is "seven billion, one hundred three million, six hundred forty thousand, six hundred fifty-six".