61612213 has 8 divisors (see below), whose sum is σ = 66590048. Its totient is φ = 56668464.

The previous prime is 61612183. The next prime is 61612223. The reversal of 61612213 is 31221616.

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 61612213 - 2⁵ = 61612181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61612223) 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, 4695 + ... + 12052.

It is an arithmetic number, because the mean of its divisors is an integer number (8323756).

Almost surely, 2^61612213 is an apocalyptic number.

It is an amenable number.

61612213 is a deficient number, since it is larger than the sum of its proper divisors (4977835).

61612213 is a wasteful number, since it uses less digits than its factorization.

61612213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17043.

The product of its digits is 432, while the sum is 22.

The square root of 61612213 is about 7849.3447497227. The cubic root of 61612213 is about 394.9622631256.

Adding to 61612213 its reverse (31221616), we get a palindrome (92833829).

The spelling of 61612213 in words is "sixty-one million, six hundred twelve thousand, two hundred thirteen".