2692644864 has 384 divisors, whose sum is σ = 9204259680. Its totient is φ = 693633024.

The previous prime is 2692644863. The next prime is 2692644883. The reversal of 2692644864 is 4684462962.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (2692644863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62619627 + ... + 62619669.

Almost surely, 2^2692644864 is an apocalyptic number.

2692644864 is a gapful number since it is divisible by the number (24) 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 2692644864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4602129840).

2692644864 is an abundant number, since it is smaller than the sum of its proper divisors (6511614816).

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

2692644864 is an equidigital number, since it uses as much as digits as its factorization.

2692644864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 68 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 51.

The square root of 2692644864 is about 51890.7011322838. The cubic root of 2692644864 is about 1391.2110736310.

The spelling of 2692644864 in words is "two billion, six hundred ninety-two million, six hundred forty-four thousand, eight hundred sixty-four".