7648387081 has 8 divisors (see below), whose sum is σ = 7832637824. Its totient is φ = 7464426480.

The previous prime is 7648387069. The next prime is 7648387099. The reversal of 7648387081 is 1807838467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7648387081 - 2⁵ = 7648387049 is a prime.

It is a super-2 number, since 2×7648387081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7648387051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18705 + ... + 125086.

It is an arithmetic number, because the mean of its divisors is an integer number (979079728).

Almost surely, 2^7648387081 is an apocalyptic number.

It is an amenable number.

7648387081 is a deficient number, since it is larger than the sum of its proper divisors (184250743).

7648387081 is a wasteful number, since it uses less digits than its factorization.

7648387081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145071.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 7648387081 is about 87455.0574924058. The cubic root of 7648387081 is about 1970.2588476041.

The spelling of 7648387081 in words is "seven billion, six hundred forty-eight million, three hundred eighty-seven thousand, eighty-one".