2690611689 has 8 divisors (see below), whose sum is σ = 3597258880. Its totient is φ = 1788852816.

The previous prime is 2690611681. The next prime is 2690611697. The reversal of 2690611689 is 9861160962.

It is an interprime number because it is at equal distance from previous prime (2690611681) and next prime (2690611697).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2690611689 - 2³ = 2690611681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690611681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220794 + ... + 1222995.

It is an arithmetic number, because the mean of its divisors is an integer number (449657360).

Almost surely, 2^2690611689 is an apocalyptic number.

It is an amenable number.

2690611689 is a deficient number, since it is larger than the sum of its proper divisors (906647191).

2690611689 is a wasteful number, since it uses less digits than its factorization.

2690611689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444159.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 2690611689 is about 51871.1064948493. The cubic root of 2690611689 is about 1390.8608247178.

The spelling of 2690611689 in words is "two billion, six hundred ninety million, six hundred eleven thousand, six hundred eighty-nine".