61377263 has 2 divisors, whose sum is σ = 61377264. Its totient is φ = 61377262.

The previous prime is 61377247. The next prime is 61377269. The reversal of 61377263 is 36277316.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61377263 - 2⁴ = 61377247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61377269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30688631 + 30688632.

It is an arithmetic number, because the mean of its divisors is an integer number (30688632).

Almost surely, 2^61377263 is an apocalyptic number.

61377263 is a deficient number, since it is larger than the sum of its proper divisors (1).

61377263 is an equidigital number, since it uses as much as digits as its factorization.

61377263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 35.

The square root of 61377263 is about 7834.3642371286. The cubic root of 61377263 is about 394.4595782125.

The spelling of 61377263 in words is "sixty-one million, three hundred seventy-seven thousand, two hundred sixty-three".