61035640 has 32 divisors (see below), whose sum is σ = 138600000. Its totient is φ = 24188544.

The previous prime is 61035631. The next prime is 61035641. The reversal of 61035640 is 4653016.

61035640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61035641) 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 7 ways as a sum of consecutive naturals, for example, 2640 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (4331250).

Almost surely, 2^61035640 is an apocalyptic number.

It is an amenable number.

61035640 is an abundant number, since it is smaller than the sum of its proper divisors (77564360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61035640 is a wasteful number, since it uses less digits than its factorization.

61035640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14119 (or 14115 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 61035640 is about 7812.5309599387. The cubic root of 61035640 is about 393.7263682802.

Adding to 61035640 its reverse (4653016), we get a palindrome (65688656).

The spelling of 61035640 in words is "sixty-one million, thirty-five thousand, six hundred forty".