2658679660 has 96 divisors (see below), whose sum is σ = 7093481472. Its totient is φ = 814268160.

The previous prime is 2658679631. The next prime is 2658679663. The reversal of 2658679660 is 669768562.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2658679663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32859 + ... + 79981.

It is an arithmetic number, because the mean of its divisors is an integer number (73890432).

Almost surely, 2^2658679660 is an apocalyptic number.

2658679660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2658679660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3546740736).

2658679660 is an abundant number, since it is smaller than the sum of its proper divisors (4434801812).

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

2658679660 is a wasteful number, since it uses less digits than its factorization.

2658679660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47183 (or 47181 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The square root of 2658679660 is about 51562.3860968439. The cubic root of 2658679660 is about 1385.3366938949.

The spelling of 2658679660 in words is "two billion, six hundred fifty-eight million, six hundred seventy-nine thousand, six hundred sixty".