61606143 has 32 divisors (see below), whose sum is σ = 95462400. Its totient is φ = 39227328.

The previous prime is 61606123. The next prime is 61606163. The reversal of 61606143 is 34160616.

61606143 is a `hidden beast` number, since 616 + 0 + 6 + 1 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (61606123) and next prime (61606163).

It is not a de Polignac number, because 61606143 - 2¹⁶ = 61540607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61606123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54003 + ... + 55131.

It is an arithmetic number, because the mean of its divisors is an integer number (2983200).

Almost surely, 2^61606143 is an apocalyptic number.

61606143 is a deficient number, since it is larger than the sum of its proper divisors (33856257).

61606143 is a wasteful number, since it uses less digits than its factorization.

61606143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 61606143 is about 7848.9580837204. The cubic root of 61606143 is about 394.9492922142.

Adding to 61606143 its reverse (34160616), we get a palindrome (95766759).

The spelling of 61606143 in words is "sixty-one million, six hundred six thousand, one hundred forty-three".