61263789 has 16 divisors (see below), whose sum is σ = 86323200. Its totient is φ = 38568816.

The previous prime is 61263779. The next prime is 61263791. The reversal of 61263789 is 98736216.

It is a happy number.

It is not a de Polignac number, because 61263789 - 2⁵ = 61263757 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61263789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61263779) 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 in 15 ways as a sum of consecutive naturals, for example, 169 + ... + 11070.

It is an arithmetic number, because the mean of its divisors is an integer number (5395200).

Almost surely, 2^61263789 is an apocalyptic number.

61263789 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

61263789 is a deficient number, since it is larger than the sum of its proper divisors (25059411).

61263789 is a wasteful number, since it uses less digits than its factorization.

61263789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11344.

The product of its digits is 108864, while the sum is 42.

The square root of 61263789 is about 7827.1188185692. The cubic root of 61263789 is about 394.2163365682.

The spelling of 61263789 in words is "sixty-one million, two hundred sixty-three thousand, seven hundred eighty-nine".