7677961 has 2 divisors, whose sum is σ = 7677962. Its totient is φ = 7677960.

The previous prime is 7677959. The next prime is 7677973. The reversal of 7677961 is 1697767.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5664400 + 2013561 = 2380^2 + 1419^2 .

It is an emirp because it is prime and its reverse (1697767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7677961 - 2¹ = 7677959 is a prime.

Together with 7677959, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7677911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3838980 + 3838981.

It is an arithmetic number, because the mean of its divisors is an integer number (3838981).

Almost surely, 2^7677961 is an apocalyptic number.

It is an amenable number.

7677961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7677961 is an equidigital number, since it uses as much as digits as its factorization.

7677961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 43.

The square root of 7677961 is about 2770.9133873147. The cubic root of 7677961 is about 197.2795039620.

The spelling of 7677961 in words is "seven million, six hundred seventy-seven thousand, nine hundred sixty-one".