61712219 has 8 divisors (see below), whose sum is σ = 62314560. Its totient is φ = 61113096.

The previous prime is 61712207. The next prime is 61712237. The reversal of 61712219 is 91221716.

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 61712219 - 2¹² = 61708123 is a prime.

It is a super-2 number, since 2×61712219² = 7616795947807922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61712191 and 61712200.

It is not an unprimeable number, because it can be changed into a prime (61712239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54392 + ... + 55514.

It is an arithmetic number, because the mean of its divisors is an integer number (7789320).

Almost surely, 2^61712219 is an apocalyptic number.

61712219 is a deficient number, since it is larger than the sum of its proper divisors (602341).

61712219 is a wasteful number, since it uses less digits than its factorization.

61712219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its digits is 1512, while the sum is 29.

The square root of 61712219 is about 7855.7125074687. The cubic root of 61712219 is about 395.1758422342.

The spelling of 61712219 in words is "sixty-one million, seven hundred twelve thousand, two hundred nineteen".