2665720494 has 24 divisors (see below), whose sum is σ = 5776677192. Its totient is φ = 888427440.

The previous prime is 2665720483. The next prime is 2665720517. The reversal of 2665720494 is 4940275662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208404 + ... + 220824.

It is an arithmetic number, because the mean of its divisors is an integer number (240694883).

Almost surely, 2^2665720494 is an apocalyptic number.

2665720494 is an abundant number, since it is smaller than the sum of its proper divisors (3110956698).

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

2665720494 is a wasteful number, since it uses less digits than its factorization.

2665720494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24352 (or 24349 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 2665720494 is about 51630.6158591973. The cubic root of 2665720494 is about 1386.5585194283.

The spelling of 2665720494 in words is "two billion, six hundred sixty-five million, seven hundred twenty thousand, four hundred ninety-four".