7640332380 has 72 divisors (see below), whose sum is σ = 23342482800. Its totient is φ = 2022757632.

The previous prime is 7640332367. The next prime is 7640332387. The reversal of 7640332380 is 832330467.

7640332380 is a `hidden beast` number, since 7 + 640 + 3 + 3 + 2 + 3 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640332387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127665 + ... + 177704.

It is an arithmetic number, because the mean of its divisors is an integer number (324201150).

Almost surely, 2^7640332380 is an apocalyptic number.

It is an amenable number.

7640332380 is an abundant number, since it is smaller than the sum of its proper divisors (15702150420).

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

7640332380 is a wasteful number, since it uses less digits than its factorization.

7640332380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305523 (or 305518 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 7640332380 is about 87408.9948460683. The cubic root of 7640332380 is about 1969.5669622878.

The spelling of 7640332380 in words is "seven billion, six hundred forty million, three hundred thirty-two thousand, three hundred eighty".