61773401 has 2 divisors, whose sum is σ = 61773402. Its totient is φ = 61773400.

The previous prime is 61773379. The next prime is 61773431. The reversal of 61773401 is 10437716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42237001 + 19536400 = 6499^2 + 4420^2 .

It is a cyclic number.

It is not a de Polignac number, because 61773401 - 2¹⁰ = 61772377 is a prime.

It is a super-2 number, since 2×61773401² = 7631906142213602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61773431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30886700 + 30886701.

It is an arithmetic number, because the mean of its divisors is an integer number (30886701).

Almost surely, 2^61773401 is an apocalyptic number.

It is an amenable number.

61773401 is a deficient number, since it is larger than the sum of its proper divisors (1).

61773401 is an equidigital number, since it uses as much as digits as its factorization.

61773401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 61773401 is about 7859.6056516851. The cubic root of 61773401 is about 395.3063926244.

The spelling of 61773401 in words is "sixty-one million, seven hundred seventy-three thousand, four hundred one".