2665246690 has 32 divisors (see below), whose sum is σ = 4861407600. Its totient is φ = 1051951104.

The previous prime is 2665246673. The next prime is 2665246699. The reversal of 2665246690 is 966425662.

It can be written as a sum of positive squares in 8 ways, for example, as 625550121 + 2039696569 = 25011^2 + 45163^2 .

It is a super-2 number, since 2×2665246690² = 14207079837111912200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2665246690.

It is not an unprimeable number, because it can be changed into a prime (2665246699) 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, 334594 + ... + 342466.

Almost surely, 2^2665246690 is an apocalyptic number.

2665246690 is a deficient number, since it is larger than the sum of its proper divisors (2196160910).

2665246690 is a wasteful number, since it uses less digits than its factorization.

2665246690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326.

The product of its (nonzero) digits is 933120, while the sum is 46.

The square root of 2665246690 is about 51626.0272537022. The cubic root of 2665246690 is about 1386.4763657916.

The spelling of 2665246690 in words is "two billion, six hundred sixty-five million, two hundred forty-six thousand, six hundred ninety".