61006771 has 8 divisors (see below), whose sum is σ = 70865504. Its totient is φ = 51433920.

The previous prime is 61006753. The next prime is 61006793. The reversal of 61006771 is 17760016.

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 61006771 - 2¹³ = 60998579 is a prime.

It is a super-2 number, since 2×61006771² = 7443652215692882, which contains 22 as substring.

It is a Duffinian number.

61006771 is a modest number, since divided by 6771 gives 61 as remainder.

It is not an unprimeable number, because it can be changed into a prime (61006711) 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, 71010 + ... + 71863.

It is an arithmetic number, because the mean of its divisors is an integer number (8858188).

Almost surely, 2^61006771 is an apocalyptic number.

61006771 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

61006771 is the 4510-th hex number.

61006771 is a deficient number, since it is larger than the sum of its proper divisors (9858733).

61006771 is a wasteful number, since it uses less digits than its factorization.

61006771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142941.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 61006771 is about 7810.6831327356. The cubic root of 61006771 is about 393.6642828109.

Adding to 61006771 its reverse (17760016), we get a palindrome (78766787).

The spelling of 61006771 in words is "sixty-one million, six thousand, seven hundred seventy-one".