61660604 has 12 divisors (see below), whose sum is σ = 107998800. Its totient is φ = 30803808.

The previous prime is 61660603. The next prime is 61660607. The reversal of 61660604 is 40606616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61660603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824 + ... + 11135.

It is an arithmetic number, because the mean of its divisors is an integer number (8999900).

Almost surely, 2^61660604 is an apocalyptic number.

It is an amenable number.

61660604 is a deficient number, since it is larger than the sum of its proper divisors (46338196).

61660604 is a wasteful number, since it uses less digits than its factorization.

61660604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13252 (or 13250 counting only the distinct ones).

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

The square root of 61660604 is about 7852.4266313032. The cubic root of 61660604 is about 395.0656388275.

The spelling of 61660604 in words is "sixty-one million, six hundred sixty thousand, six hundred four".