61605700617 has 8 divisors (see below), whose sum is σ = 82144782720. Its totient is φ = 41068542800.

The previous prime is 61605700613. The next prime is 61605700621. The reversal of 61605700617 is 71600750616.

It is an interprime number because it is at equal distance from previous prime (61605700613) and next prime (61605700621).

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 61605700617 - 2² = 61605700613 is a prime.

It is a super-2 number, since 2×61605700617² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61605700613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404634 + ... + 535667.

It is an arithmetic number, because the mean of its divisors is an integer number (10268097840).

Almost surely, 2^61605700617 is an apocalyptic number.

It is an amenable number.

61605700617 is a deficient number, since it is larger than the sum of its proper divisors (20539082103).

61605700617 is a wasteful number, since it uses less digits than its factorization.

61605700617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962143.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 61605700617 in words is "sixty-one billion, six hundred five million, seven hundred thousand, six hundred seventeen".