61642441 has 24 divisors (see below), whose sum is σ = 76598880. Its totient is φ = 49315392.

The previous prime is 61642417. The next prime is 61642447. The reversal of 61642441 is 14424616.

It is not a de Polignac number, because 61642441 - 2⁹ = 61641929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61642447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67510 + ... + 68416.

It is an arithmetic number, because the mean of its divisors is an integer number (3191620).

Almost surely, 2^61642441 is an apocalyptic number.

It is an amenable number.

61642441 is a deficient number, since it is larger than the sum of its proper divisors (14956439).

61642441 is a wasteful number, since it uses less digits than its factorization.

61642441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1006 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 61642441 is about 7851.2700246521. The cubic root of 61642441 is about 395.0268443007.

The spelling of 61642441 in words is "sixty-one million, six hundred forty-two thousand, four hundred forty-one".