61604613606 has 32 divisors (see below), whose sum is σ = 124483189248. Its totient is φ = 20323386720.

The previous prime is 61604613593. The next prime is 61604613611. The reversal of 61604613606 is 60631640616.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188115 + ... + 398241.

It is an arithmetic number, because the mean of its divisors is an integer number (3890099664).

Almost surely, 2^61604613606 is an apocalyptic number.

61604613606 is an abundant number, since it is smaller than the sum of its proper divisors (62878575642).

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

61604613606 is a wasteful number, since it uses less digits than its factorization.

61604613606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210636.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 61604613606 in words is "sixty-one billion, six hundred four million, six hundred thirteen thousand, six hundred six".