61605516 has 24 divisors (see below), whose sum is σ = 164281600. Its totient is φ = 17601552.

The previous prime is 61605469. The next prime is 61605517. The reversal of 61605516 is 61550616.

It is not an unprimeable number, because it can be changed into a prime (61605517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366616 + ... + 366783.

Almost surely, 2^61605516 is an apocalyptic number.

It is an amenable number.

61605516 is an abundant number, since it is smaller than the sum of its proper divisors (102676084).

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

61605516 is a wasteful number, since it uses less digits than its factorization.

61605516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733413 (or 733411 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 61605516 is about 7848.9181420117. The cubic root of 61605516 is about 394.9479523368.

The spelling of 61605516 in words is "sixty-one million, six hundred five thousand, five hundred sixteen".