617620061 has 8 divisors (see below), whose sum is σ = 650401920. Its totient is φ = 584865792.

The previous prime is 617620057. The next prime is 617620079. The reversal of 617620061 is 160026716.

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 617620061 - 2² = 617620057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617620001) 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, 52061 + ... + 62813.

It is an arithmetic number, because the mean of its divisors is an integer number (81300240).

Almost surely, 2^617620061 is an apocalyptic number.

It is an amenable number.

617620061 is a deficient number, since it is larger than the sum of its proper divisors (32781859).

617620061 is a wasteful number, since it uses less digits than its factorization.

617620061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13795.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 617620061 is about 24851.9629204616. The cubic root of 617620061 is about 851.6094355754.

Adding to 617620061 its reverse (160026716), we get a palindrome (777646777).

The spelling of 617620061 in words is "six hundred seventeen million, six hundred twenty thousand, sixty-one".