61632641 has 8 divisors (see below), whose sum is σ = 71875200. Its totient is φ = 52827684.

The previous prime is 61632583. The next prime is 61632643. The reversal of 61632641 is 14623616.

It is a happy number.

It is not a de Polignac number, because 61632641 - 2⁶ = 61632577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61632643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89501 + ... + 90186.

It is an arithmetic number, because the mean of its divisors is an integer number (8984400).

Almost surely, 2^61632641 is an apocalyptic number.

It is an amenable number.

61632641 is a deficient number, since it is larger than the sum of its proper divisors (10242559).

61632641 is an equidigital number, since it uses as much as digits as its factorization.

61632641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179708 (or 179694 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 61632641 is about 7850.6458969947. The cubic root of 61632641 is about 395.0059092210.

The spelling of 61632641 in words is "sixty-one million, six hundred thirty-two thousand, six hundred forty-one".