61622717 has 8 divisors (see below), whose sum is σ = 66732120. Its totient is φ = 56566080.

The previous prime is 61622711. The next prime is 61622753. The reversal of 61622717 is 71722616.

It can be written as a sum of positive squares in 4 ways, for example, as 63001 + 61559716 = 251^2 + 7846^2 .

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 61622717 - 2⁶ = 61622653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61622711) 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, 10742 + ... + 15447.

It is an arithmetic number, because the mean of its divisors is an integer number (8341515).

Almost surely, 2^61622717 is an apocalyptic number.

It is an amenable number.

61622717 is a deficient number, since it is larger than the sum of its proper divisors (5109403).

61622717 is a wasteful number, since it uses less digits than its factorization.

61622717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26383.

The product of its digits is 7056, while the sum is 32.

The square root of 61622717 is about 7850.0138216439. The cubic root of 61622717 is about 394.9847069868.

The spelling of 61622717 in words is "sixty-one million, six hundred twenty-two thousand, seven hundred seventeen".