61766959 has 2 divisors, whose sum is σ = 61766960. Its totient is φ = 61766958.

The previous prime is 61766879. The next prime is 61766987. The reversal of 61766959 is 95966716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61766959 - 2¹⁷ = 61635887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61766989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30883479 + 30883480.

It is an arithmetic number, because the mean of its divisors is an integer number (30883480).

Almost surely, 2^61766959 is an apocalyptic number.

61766959 is a deficient number, since it is larger than the sum of its proper divisors (1).

61766959 is an equidigital number, since it uses as much as digits as its factorization.

61766959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 61766959 is about 7859.1958240013. The cubic root of 61766959 is about 395.2926507211.

It can be divided in two parts, 617 and 66959, that added together give a palindrome (67576).

The spelling of 61766959 in words is "sixty-one million, seven hundred sixty-six thousand, nine hundred fifty-nine".