2611987764 has 48 divisors (see below), whose sum is σ = 6302415168. Its totient is φ = 841471488.

The previous prime is 2611987757. The next prime is 2611987769. The reversal of 2611987764 is 4677891162.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611987769) 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, 11964 + ... + 73260.

It is an arithmetic number, because the mean of its divisors is an integer number (131300316).

Almost surely, 2^2611987764 is an apocalyptic number.

It is an amenable number.

2611987764 is an abundant number, since it is smaller than the sum of its proper divisors (3690427404).

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

2611987764 is a wasteful number, since it uses less digits than its factorization.

2611987764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61424 (or 61422 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 2611987764 is about 51107.6096486619. The cubic root of 2611987764 is about 1377.1789608708.

The spelling of 2611987764 in words is "two billion, six hundred eleven million, nine hundred eighty-seven thousand, seven hundred sixty-four".