61767677 has 2 divisors, whose sum is σ = 61767678. Its totient is φ = 61767676.

The previous prime is 61767653. The next prime is 61767697. The reversal of 61767677 is 77676716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57851236 + 3916441 = 7606^2 + 1979^2 .

It is a cyclic number.

It is not a de Polignac number, because 61767677 - 2⁸ = 61767421 is a prime.

It is a super-3 number, since 3×61767677³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61767617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30883838 + 30883839.

It is an arithmetic number, because the mean of its divisors is an integer number (30883839).

Almost surely, 2^61767677 is an apocalyptic number.

It is an amenable number.

61767677 is a deficient number, since it is larger than the sum of its proper divisors (1).

61767677 is an equidigital number, since it uses as much as digits as its factorization.

61767677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518616, while the sum is 47.

The square root of 61767677 is about 7859.2415028424. The cubic root of 61767677 is about 395.2941823869.

The spelling of 61767677 in words is "sixty-one million, seven hundred sixty-seven thousand, six hundred seventy-seven".