61612427 has 2 divisors, whose sum is σ = 61612428. Its totient is φ = 61612426.

The previous prime is 61612391. The next prime is 61612429. The reversal of 61612427 is 72421616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61612427 - 2⁸ = 61612171 is a prime.

Together with 61612429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61612427.

It is not a weakly prime, because it can be changed into another prime (61612429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806213 + 30806214.

It is an arithmetic number, because the mean of its divisors is an integer number (30806214).

Almost surely, 2^61612427 is an apocalyptic number.

61612427 is a deficient number, since it is larger than the sum of its proper divisors (1).

61612427 is an equidigital number, since it uses as much as digits as its factorization.

61612427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 61612427 is about 7849.3583814220. The cubic root of 61612427 is about 394.9627204042.

The spelling of 61612427 in words is "sixty-one million, six hundred twelve thousand, four hundred twenty-seven".