7700681 has 4 divisors (see below), whose sum is σ = 8106000. Its totient is φ = 7295364.

The previous prime is 7700659. The next prime is 7700687. The reversal of 7700681 is 1860077.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1860077 = 103 ⋅18059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7700681 is a prime.

It is a super-2 number, since 2×7700681² = 118600975727522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7700687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202631 + ... + 202668.

It is an arithmetic number, because the mean of its divisors is an integer number (2026500).

Almost surely, 2^7700681 is an apocalyptic number.

It is an amenable number.

7700681 is a deficient number, since it is larger than the sum of its proper divisors (405319).

7700681 is a wasteful number, since it uses less digits than its factorization.

7700681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405318.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 7700681 is about 2775.0100900717. The cubic root of 7700681 is about 197.4739035113.

The spelling of 7700681 in words is "seven million, seven hundred thousand, six hundred eighty-one".