2607681 has 8 divisors (see below), whose sum is σ = 3681504. Its totient is φ = 1636160.

The previous prime is 2607677. The next prime is 2607721. The reversal of 2607681 is 1867062.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2607681 - 2² = 2607677 is a prime.

It is a super-2 number, since 2×2607681² = 13600000395522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2607601) 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, 25515 + ... + 25616.

It is an arithmetic number, because the mean of its divisors is an integer number (460188).

2^2607681 is an apocalyptic number.

It is an amenable number.

2607681 is a deficient number, since it is larger than the sum of its proper divisors (1073823).

2607681 is a wasteful number, since it uses less digits than its factorization.

2607681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51151.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2607681 is about 1614.8315701645. The cubic root of 2607681 is about 137.6421626079.

The spelling of 2607681 in words is "two million, six hundred seven thousand, six hundred eighty-one".