61601773 has 2 divisors, whose sum is σ = 61601774. Its totient is φ = 61601772.

The previous prime is 61601767. The next prime is 61601779. The reversal of 61601773 is 37710616.

It is a balanced prime because it is at equal distance from previous prime (61601767) and next prime (61601779).

It can be written as a sum of positive squares in only one way, i.e., 55160329 + 6441444 = 7427^2 + 2538^2 .

It is a cyclic number.

It is not a de Polignac number, because 61601773 - 2¹⁷ = 61470701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61601779) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30800886 + 30800887.

It is an arithmetic number, because the mean of its divisors is an integer number (30800887).

Almost surely, 2^61601773 is an apocalyptic number.

It is an amenable number.

61601773 is a deficient number, since it is larger than the sum of its proper divisors (1).

61601773 is an equidigital number, since it uses as much as digits as its factorization.

61601773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 61601773 is about 7848.6796978855. The cubic root of 61601773 is about 394.9399534852.

The spelling of 61601773 in words is "sixty-one million, six hundred one thousand, seven hundred seventy-three".