7677641 has 4 divisors (see below), whose sum is σ = 7684500. Its totient is φ = 7670784.

The previous prime is 7677623. The next prime is 7677661. The reversal of 7677641 is 1467767.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 366025 + 7311616 = 605^2 + 2704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7677641 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7677595 and 7677604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7677601) 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, 1316 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (1921125).

Almost surely, 2^7677641 is an apocalyptic number.

It is an amenable number.

7677641 is a deficient number, since it is larger than the sum of its proper divisors (6859).

7677641 is a wasteful number, since it uses less digits than its factorization.

7677641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6858.

The product of its digits is 49392, while the sum is 38.

The square root of 7677641 is about 2770.8556440205. The cubic root of 7677641 is about 197.2767632032.

The spelling of 7677641 in words is "seven million, six hundred seventy-seven thousand, six hundred forty-one".