7643648336 has 10 divisors (see below), whose sum is σ = 14809568682. Its totient is φ = 3821824160.

The previous prime is 7643648329. The next prime is 7643648347. The reversal of 7643648336 is 6338463467.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6393601600 + 1250046736 = 79960^2 + 35356^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238863995 + ... + 238864026.

Almost surely, 2^7643648336 is an apocalyptic number.

It is an amenable number.

7643648336 is a deficient number, since it is larger than the sum of its proper divisors (7165920346).

7643648336 is a wasteful number, since it uses less digits than its factorization.

7643648336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477728029 (or 477728023 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 50.

The square root of 7643648336 is about 87427.9608363366. The cubic root of 7643648336 is about 1969.8518562102.

The spelling of 7643648336 in words is "seven billion, six hundred forty-three million, six hundred forty-eight thousand, three hundred thirty-six".