61201617 has 4 divisors (see below), whose sum is σ = 81602160. Its totient is φ = 40801076.

The previous prime is 61201607. The next prime is 61201631. The reversal of 61201617 is 71610216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61201617 - 2¹⁴ = 61185233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61201607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10200267 + ... + 10200272.

It is an arithmetic number, because the mean of its divisors is an integer number (20400540).

Almost surely, 2^61201617 is an apocalyptic number.

It is an amenable number.

61201617 is a deficient number, since it is larger than the sum of its proper divisors (20400543).

61201617 is a wasteful number, since it uses less digits than its factorization.

61201617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20400542.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 61201617 is about 7823.1462340928. The cubic root of 61201617 is about 394.0829379543.

The spelling of 61201617 in words is "sixty-one million, two hundred one thousand, six hundred seventeen".