61606871 has 2 divisors, whose sum is σ = 61606872. Its totient is φ = 61606870.

The previous prime is 61606849. The next prime is 61606877. The reversal of 61606871 is 17860616.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61606871 is a prime.

It is equal to p_3651686 and since 61606871 and 3651686 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61606877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30803435 + 30803436.

It is an arithmetic number, because the mean of its divisors is an integer number (30803436).

Almost surely, 2^61606871 is an apocalyptic number.

61606871 is a deficient number, since it is larger than the sum of its proper divisors (1).

61606871 is an equidigital number, since it uses as much as digits as its factorization.

61606871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 61606871 is about 7849.0044591655. The cubic root of 61606871 is about 394.9508479138.

It can be divided in two parts, 6160 and 6871, that added together give a palindrome (13031).

The spelling of 61606871 in words is "sixty-one million, six hundred six thousand, eight hundred seventy-one".