61764719 has 2 divisors, whose sum is σ = 61764720. Its totient is φ = 61764718.

The previous prime is 61764709. The next prime is 61764733. The reversal of 61764719 is 91746716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61764719 - 2⁸ = 61764463 is a prime.

It is a super-2 number, since 2×61764719² = 7629761026297922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61764709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30882359 + 30882360.

It is an arithmetic number, because the mean of its divisors is an integer number (30882360).

Almost surely, 2^61764719 is an apocalyptic number.

61764719 is a deficient number, since it is larger than the sum of its proper divisors (1).

61764719 is an equidigital number, since it uses as much as digits as its factorization.

61764719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 41.

The square root of 61764719 is about 7859.0533144902. The cubic root of 61764719 is about 395.2878721887.

The spelling of 61764719 in words is "sixty-one million, seven hundred sixty-four thousand, seven hundred nineteen".