7640705943 has 40 divisors (see below), whose sum is σ = 12304253808. Its totient is φ = 4697243136.

The previous prime is 7640705927. The next prime is 7640705957. The reversal of 7640705943 is 3495070467.

It is not a de Polignac number, because 7640705943 - 2⁴ = 7640705927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640705903) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1246855 + ... + 1252967.

Almost surely, 2^7640705943 is an apocalyptic number.

7640705943 is a deficient number, since it is larger than the sum of its proper divisors (4663547865).

7640705943 is a wasteful number, since it uses less digits than its factorization.

7640705943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7325 (or 7316 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 7640705943 is about 87411.1316881323. The cubic root of 7640705943 is about 1969.5990614739.

The spelling of 7640705943 in words is "seven billion, six hundred forty million, seven hundred five thousand, nine hundred forty-three".