61164773 has 2 divisors, whose sum is σ = 61164774. Its totient is φ = 61164772.

The previous prime is 61164749. The next prime is 61164823. The reversal of 61164773 is 37746116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60497284 + 667489 = 7778^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 61164773 - 2¹⁶ = 61099237 is a prime.

It is a super-2 number, since 2×61164773² = 7482258912283058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61164713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30582386 + 30582387.

It is an arithmetic number, because the mean of its divisors is an integer number (30582387).

Almost surely, 2^61164773 is an apocalyptic number.

It is an amenable number.

61164773 is a deficient number, since it is larger than the sum of its proper divisors (1).

61164773 is an equidigital number, since it uses as much as digits as its factorization.

61164773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 61164773 is about 7820.7910725195. The cubic root of 61164773 is about 394.0038414254.

The spelling of 61164773 in words is "sixty-one million, one hundred sixty-four thousand, seven hundred seventy-three".