61263479 has 2 divisors, whose sum is σ = 61263480. Its totient is φ = 61263478.

The previous prime is 61263451. The next prime is 61263481. The reversal of 61263479 is 97436216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61263479 is a prime.

It is a super-3 number, since 3×61263479³ (a number of 24 digits) contains 333 as substring.

Together with 61263481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61263079) 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, 30631739 + 30631740.

It is an arithmetic number, because the mean of its divisors is an integer number (30631740).

Almost surely, 2^61263479 is an apocalyptic number.

61263479 is a deficient number, since it is larger than the sum of its proper divisors (1).

61263479 is an equidigital number, since it uses as much as digits as its factorization.

61263479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 61263479 is about 7827.0990155996. The cubic root of 61263479 is about 394.2156716443.

The spelling of 61263479 in words is "sixty-one million, two hundred sixty-three thousand, four hundred seventy-nine".