61677701 has 2 divisors, whose sum is σ = 61677702. Its totient is φ = 61677700.

The previous prime is 61677691. The next prime is 61677709. The reversal of 61677701 is 10777616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32787076 + 28890625 = 5726^2 + 5375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61677701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61677709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30838850 + 30838851.

It is an arithmetic number, because the mean of its divisors is an integer number (30838851).

Almost surely, 2^61677701 is an apocalyptic number.

It is an amenable number.

61677701 is a deficient number, since it is larger than the sum of its proper divisors (1).

61677701 is an equidigital number, since it uses as much as digits as its factorization.

61677701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 61677701 is about 7853.5152002145. The cubic root of 61677701 is about 395.1021495146.

The spelling of 61677701 in words is "sixty-one million, six hundred seventy-seven thousand, seven hundred one".