7902398664 has 32 divisors (see below), whose sum is σ = 21951108000. Its totient is φ = 2634132816.

The previous prime is 7902398663. The next prime is 7902398689. The reversal of 7902398664 is 4668932097.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 7902398664.

It is not an unprimeable number, because it can be changed into a prime (7902398663) 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, 18292374 + ... + 18292805.

It is an arithmetic number, because the mean of its divisors is an integer number (685972125).

Almost surely, 2^7902398664 is an apocalyptic number.

It is an amenable number.

7902398664 is an abundant number, since it is smaller than the sum of its proper divisors (14048709336).

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

7902398664 is a wasteful number, since it uses less digits than its factorization.

7902398664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36585194 (or 36585184 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 7902398664 is about 88895.4366882800. The cubic root of 7902398664 is about 1991.8332528444.

The spelling of 7902398664 in words is "seven billion, nine hundred two million, three hundred ninety-eight thousand, six hundred sixty-four".