61426613 has 2 divisors, whose sum is σ = 61426614. Its totient is φ = 61426612.

The previous prime is 61426609. The next prime is 61426637. The reversal of 61426613 is 31662416.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54493924 + 6932689 = 7382^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 61426613 - 2² = 61426609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61426693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30713306 + 30713307.

It is an arithmetic number, because the mean of its divisors is an integer number (30713307).

Almost surely, 2^61426613 is an apocalyptic number.

It is an amenable number.

61426613 is a deficient number, since it is larger than the sum of its proper divisors (1).

61426613 is an equidigital number, since it uses as much as digits as its factorization.

61426613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 61426613 is about 7837.5131897816. The cubic root of 61426613 is about 394.5652707998.

The spelling of 61426613 in words is "sixty-one million, four hundred twenty-six thousand, six hundred thirteen".