61004643 has 32 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 33586176.

The previous prime is 61004633. The next prime is 61004663. The reversal of 61004643 is 34640016.

It is not a de Polignac number, because 61004643 - 2⁹ = 61004131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61004633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65203 + ... + 66131.

It is an arithmetic number, because the mean of its divisors is an integer number (3013200).

Almost surely, 2^61004643 is an apocalyptic number.

61004643 is a deficient number, since it is larger than the sum of its proper divisors (35417757).

61004643 is a wasteful number, since it uses less digits than its factorization.

61004643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 61004643 is about 7810.5469078676. The cubic root of 61004643 is about 393.6597055740.

Adding to 61004643 its reverse (34640016), we get a palindrome (95644659).

The spelling of 61004643 in words is "sixty-one million, four thousand, six hundred forty-three".