61648441 has 4 divisors (see below), whose sum is σ = 64328832. Its totient is φ = 58968052.

The previous prime is 61648417. The next prime is 61648459. The reversal of 61648441 is 14484616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61648441 - 2²⁵ = 28094009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61648397 and 61648406.

It is not an unprimeable number, because it can be changed into a prime (61648471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340161 + ... + 1340206.

It is an arithmetic number, because the mean of its divisors is an integer number (16082208).

Almost surely, 2^61648441 is an apocalyptic number.

It is an amenable number.

61648441 is a deficient number, since it is larger than the sum of its proper divisors (2680391).

61648441 is a wasteful number, since it uses less digits than its factorization.

61648441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680390.

The product of its digits is 18432, while the sum is 34.

The square root of 61648441 is about 7851.6521191403. The cubic root of 61648441 is about 395.0396606013.

The spelling of 61648441 in words is "sixty-one million, six hundred forty-eight thousand, four hundred forty-one".