61210641 has 8 divisors (see below), whose sum is σ = 82210464. Its totient is φ = 40508960.

The previous prime is 61210603. The next prime is 61210649. The reversal of 61210641 is 14601216.

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

It is a cyclic number.

It is not a de Polignac number, because 61210641 - 2¹⁷ = 61079569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61210649) 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, 74055 + ... + 74876.

It is an arithmetic number, because the mean of its divisors is an integer number (10276308).

Almost surely, 2^61210641 is an apocalyptic number.

It is an amenable number.

61210641 is a deficient number, since it is larger than the sum of its proper divisors (20999823).

61210641 is a wasteful number, since it uses less digits than its factorization.

61210641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149071.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 61210641 is about 7823.7229628867. The cubic root of 61210641 is about 394.1023057958.

Adding to 61210641 its reverse (14601216), we get a palindrome (75811857).

The spelling of 61210641 in words is "sixty-one million, two hundred ten thousand, six hundred forty-one".