61925643 has 24 divisors (see below), whose sum is σ = 99655920. Its totient is φ = 36792000.

The previous prime is 61925627. The next prime is 61925653. The reversal of 61925643 is 34652916.

It is a happy number.

61925643 is a `hidden beast` number, since 6 + 1 + 9 + 2 + 5 + 643 = 666.

61925643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61925643 - 2⁴ = 61925627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61925598 and 61925607.

It is not an unprimeable number, because it can be changed into a prime (61925603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5733 + ... + 12518.

It is an arithmetic number, because the mean of its divisors is an integer number (4152330).

Almost surely, 2^61925643 is an apocalyptic number.

61925643 is a deficient number, since it is larger than the sum of its proper divisors (37730277).

61925643 is a wasteful number, since it uses less digits than its factorization.

61925643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18299 (or 18296 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 61925643 is about 7869.2847832570. The cubic root of 61925643 is about 395.6308735080.

It can be divided in two parts, 619 and 25643, that added together give a palindrome (26262).

The spelling of 61925643 in words is "sixty-one million, nine hundred twenty-five thousand, six hundred forty-three".