7659640098 has 40 divisors (see below), whose sum is σ = 18723569040. Its totient is φ = 2321102520.

The previous prime is 7659640097. The next prime is 7659640111. The reversal of 7659640098 is 8900469567.

7659640098 is a `hidden beast` number, since 7 + 6 + 596 + 40 + 0 + 9 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (7659640097) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2147388 + ... + 2150951.

It is an arithmetic number, because the mean of its divisors is an integer number (468089226).

Almost surely, 2^7659640098 is an apocalyptic number.

7659640098 is an abundant number, since it is smaller than the sum of its proper divisors (11063928942).

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

7659640098 is a wasteful number, since it uses less digits than its factorization.

7659640098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298364 (or 4298355 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 7659640098 is about 87519.3698446235. The cubic root of 7659640098 is about 1971.2246499984.

The spelling of 7659640098 in words is "seven billion, six hundred fifty-nine million, six hundred forty thousand, ninety-eight".