61203664 has 10 divisors (see below), whose sum is σ = 118582130. Its totient is φ = 30601824.

The previous prime is 61203647. The next prime is 61203671. The reversal of 61203664 is 46630216.

61203664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55950400 + 5253264 = 7480^2 + 2292^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1912599 + ... + 1912630.

It is an arithmetic number, because the mean of its divisors is an integer number (11858213).

Almost surely, 2^61203664 is an apocalyptic number.

It is an amenable number.

61203664 is a deficient number, since it is larger than the sum of its proper divisors (57378466).

61203664 is a wasteful number, since it uses less digits than its factorization.

61203664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825237 (or 3825231 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 61203664 is about 7823.2770627148. The cubic root of 61203664 is about 394.0873315134.

The spelling of 61203664 in words is "sixty-one million, two hundred three thousand, six hundred sixty-four".