7640436764 has 6 divisors (see below), whose sum is σ = 13370764344. Its totient is φ = 3820218380.

The previous prime is 7640436697. The next prime is 7640436779. The reversal of 7640436764 is 4676340467.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 955054592 + ... + 955054599.

It is an arithmetic number, because the mean of its divisors is an integer number (2228460724).

Almost surely, 2^7640436764 is an apocalyptic number.

It is an amenable number.

7640436764 is a deficient number, since it is larger than the sum of its proper divisors (5730327580).

7640436764 is a wasteful number, since it uses less digits than its factorization.

7640436764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910109195 (or 1910109193 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 47.

The square root of 7640436764 is about 87409.5919450491. The cubic root of 7640436764 is about 1969.5759318078.

The spelling of 7640436764 in words is "seven billion, six hundred forty million, four hundred thirty-six thousand, seven hundred sixty-four".