7640845632 has 84 divisors (see below), whose sum is σ = 25029846816. Its totient is φ = 2183097600.

The previous prime is 7640845631. The next prime is 7640845697. The reversal of 7640845632 is 2365480467.

7640845632 is a `hidden beast` number, since 7 + 6 + 4 + 0 + 8 + 4 + 5 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640845631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943494 + ... + 951557.

Almost surely, 2^7640845632 is an apocalyptic number.

7640845632 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7640845632 is an abundant number, since it is smaller than the sum of its proper divisors (17389001184).

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

7640845632 is a wasteful number, since it uses less digits than its factorization.

7640845632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895076 (or 1895063 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The square root of 7640845632 is about 87411.9307188670. The cubic root of 7640845632 is about 1969.6110642761.

The spelling of 7640845632 in words is "seven billion, six hundred forty million, eight hundred forty-five thousand, six hundred thirty-two".