61335641 has 8 divisors (see below), whose sum is σ = 64494144. Its totient is φ = 58218160.

The previous prime is 61335623. The next prime is 61335647. The reversal of 61335641 is 14653316.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61335641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61335647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7166 + ... + 13191.

It is an arithmetic number, because the mean of its divisors is an integer number (8061768).

Almost surely, 2^61335641 is an apocalyptic number.

It is an amenable number.

61335641 is a deficient number, since it is larger than the sum of its proper divisors (3158503).

61335641 is a wasteful number, since it uses less digits than its factorization.

61335641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20511.

The product of its digits is 6480, while the sum is 29.

The square root of 61335641 is about 7831.7074128187. The cubic root of 61335641 is about 394.3703925847.

Adding to 61335641 its reverse (14653316), we get a palindrome (75988957).

The spelling of 61335641 in words is "sixty-one million, three hundred thirty-five thousand, six hundred forty-one".