61616617 has 8 divisors (see below), whose sum is σ = 62820576. Its totient is φ = 60421152.

The previous prime is 61616587. The next prime is 61616629. The reversal of 61616617 is 71661616.

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 61616617 - 2¹¹ = 61614569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61616017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13638 + ... + 17584.

It is an arithmetic number, because the mean of its divisors is an integer number (7852572).

Almost surely, 2^61616617 is an apocalyptic number.

61616617 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

61616617 is a deficient number, since it is larger than the sum of its proper divisors (1203959).

61616617 is a wasteful number, since it uses less digits than its factorization.

61616617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247.

The product of its digits is 9072, while the sum is 34.

The square root of 61616617 is about 7849.6252776805. The cubic root of 61616617 is about 394.9716734480.

The spelling of 61616617 in words is "sixty-one million, six hundred sixteen thousand, six hundred seventeen".