61265617 has 4 divisors (see below), whose sum is σ = 70017856. Its totient is φ = 52513380.

The previous prime is 61265609. The next prime is 61265627. The reversal of 61265617 is 71656216.

It is a happy number.

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 61265617 - 2³ = 61265609 is a prime.

It is a super-3 number, since 3×61265617³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61265627) 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, 4376109 + ... + 4376122.

It is an arithmetic number, because the mean of its divisors is an integer number (17504464).

Almost surely, 2^61265617 is an apocalyptic number.

It is an amenable number.

61265617 is a deficient number, since it is larger than the sum of its proper divisors (8752239).

61265617 is an equidigital number, since it uses as much as digits as its factorization.

61265617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8752238.

The product of its digits is 15120, while the sum is 34.

The square root of 61265617 is about 7827.2355911905. The cubic root of 61265617 is about 394.2202574286.

The spelling of 61265617 in words is "sixty-one million, two hundred sixty-five thousand, six hundred seventeen".