61761263 has 2 divisors, whose sum is σ = 61761264. Its totient is φ = 61761262.

The previous prime is 61761247. The next prime is 61761299. The reversal of 61761263 is 36216716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61761263 - 2⁴ = 61761247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61761163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30880631 + 30880632.

It is an arithmetic number, because the mean of its divisors is an integer number (30880632).

Almost surely, 2^61761263 is an apocalyptic number.

61761263 is a deficient number, since it is larger than the sum of its proper divisors (1).

61761263 is an equidigital number, since it uses as much as digits as its factorization.

61761263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 61761263 is about 7858.8334376038. The cubic root of 61761263 is about 395.2804993692.

Adding to 61761263 its reverse (36216716), we get a palindrome (97977979).

The spelling of 61761263 in words is "sixty-one million, seven hundred sixty-one thousand, two hundred sixty-three".