61654361 has 2 divisors, whose sum is σ = 61654362. Its totient is φ = 61654360.

The previous prime is 61654337. The next prime is 61654409. The reversal of 61654361 is 16345616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61528336 + 126025 = 7844^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 61654361 - 2¹⁰ = 61653337 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (61654861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30827180 + 30827181.

It is an arithmetic number, because the mean of its divisors is an integer number (30827181).

Almost surely, 2^61654361 is an apocalyptic number.

It is an amenable number.

61654361 is a deficient number, since it is larger than the sum of its proper divisors (1).

61654361 is an equidigital number, since it uses as much as digits as its factorization.

61654361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 61654361 is about 7852.0291008121. The cubic root of 61654361 is about 395.0523052030.

Adding to 61654361 its reverse (16345616), we get a palindrome (77999977).

The spelling of 61654361 in words is "sixty-one million, six hundred fifty-four thousand, three hundred sixty-one".