2564380698 has 128 divisors (see below), whose sum is σ = 5945425920. Its totient is φ = 730296000.

The previous prime is 2564380681. The next prime is 2564380703. The reversal of 2564380698 is 8960834652.

It is a self number, because there is not a number n which added to its sum of digits gives 2564380698.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18448713 + ... + 18448851.

It is an arithmetic number, because the mean of its divisors is an integer number (46448640).

Almost surely, 2^2564380698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2564380698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2972712960).

2564380698 is an abundant number, since it is smaller than the sum of its proper divisors (3381045222).

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

2564380698 is a wasteful number, since it uses less digits than its factorization.

2564380698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 2488320, while the sum is 51.

The square root of 2564380698 is about 50639.7146318974. The cubic root of 2564380698 is about 1368.7606135329.

The spelling of 2564380698 in words is "two billion, five hundred sixty-four million, three hundred eighty thousand, six hundred ninety-eight".