61877663 has 2 divisors, whose sum is σ = 61877664. Its totient is φ = 61877662.

The previous prime is 61877609. The next prime is 61877681. The reversal of 61877663 is 36677816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61877663 - 2¹⁴ = 61861279 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61873663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30938831 + 30938832.

It is an arithmetic number, because the mean of its divisors is an integer number (30938832).

Almost surely, 2^61877663 is an apocalyptic number.

61877663 is a deficient number, since it is larger than the sum of its proper divisors (1).

61877663 is an equidigital number, since it uses as much as digits as its factorization.

61877663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 61877663 is about 7866.2356308466. The cubic root of 61877663 is about 395.5286688153.

The spelling of 61877663 in words is "sixty-one million, eight hundred seventy-seven thousand, six hundred sixty-three".