61063641 has 6 divisors (see below), whose sum is σ = 88203050. Its totient is φ = 40709088.

The previous prime is 61063631. The next prime is 61063657. The reversal of 61063641 is 14636016.

61063641 is a `hidden beast` number, since 6 + 10 + 6 + 3 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47403225 + 13660416 = 6885^2 + 3696^2 .

It is not a de Polignac number, because 61063641 - 2¹⁷ = 60932569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61063601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3392416 + ... + 3392433.

Almost surely, 2^61063641 is an apocalyptic number.

It is an amenable number.

61063641 is a deficient number, since it is larger than the sum of its proper divisors (27139409).

61063641 is a wasteful number, since it uses less digits than its factorization.

61063641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6784855 (or 6784852 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 61063641 is about 7814.3228113510. The cubic root of 61063641 is about 393.7865683346.

Adding to 61063641 its reverse (14636016), we get a palindrome (75699657).

The spelling of 61063641 in words is "sixty-one million, sixty-three thousand, six hundred forty-one".