61610665 has 8 divisors (see below), whose sum is σ = 73981440. Its totient is φ = 49256112.

The previous prime is 61610657. The next prime is 61610683. The reversal of 61610665 is 56601616.

61610665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61610665 - 2³ = 61610657 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 7096 + ... + 13174.

It is an arithmetic number, because the mean of its divisors is an integer number (9247680).

Almost surely, 2^61610665 is an apocalyptic number.

It is an amenable number.

61610665 is a deficient number, since it is larger than the sum of its proper divisors (12370775).

61610665 is a wasteful number, since it uses less digits than its factorization.

61610665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8111.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 61610665 is about 7849.2461421464. The cubic root of 61610665 is about 394.9589553036.

The spelling of 61610665 in words is "sixty-one million, six hundred ten thousand, six hundred sixty-five".