2664767644 has 48 divisors (see below), whose sum is σ = 5887687680. Its totient is φ = 1025069760.

The previous prime is 2664767641. The next prime is 2664767647. The reversal of 2664767644 is 4467674662.

It is an interprime number because it is at equal distance from previous prime (2664767641) and next prime (2664767647).

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2664767591 and 2664767600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664767641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30427 + ... + 79090.

It is an arithmetic number, because the mean of its divisors is an integer number (122660160).

Almost surely, 2^2664767644 is an apocalyptic number.

It is an amenable number.

2664767644 is an abundant number, since it is smaller than the sum of its proper divisors (3222920036).

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

2664767644 is a wasteful number, since it uses less digits than its factorization.

2664767644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109618 (or 109616 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 52.

The square root of 2664767644 is about 51621.3874668243. The cubic root of 2664767644 is about 1386.3932933369.

The spelling of 2664767644 in words is "two billion, six hundred sixty-four million, seven hundred sixty-seven thousand, six hundred forty-four".