61270427 has 2 divisors, whose sum is σ = 61270428. Its totient is φ = 61270426.

The previous prime is 61270423. The next prime is 61270453. The reversal of 61270427 is 72407216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61270427 - 2² = 61270423 is a prime.

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 61270427.

It is not a weakly prime, because it can be changed into another prime (61270423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30635213 + 30635214.

It is an arithmetic number, because the mean of its divisors is an integer number (30635214).

Almost surely, 2^61270427 is an apocalyptic number.

61270427 is a deficient number, since it is larger than the sum of its proper divisors (1).

61270427 is an equidigital number, since it uses as much as digits as its factorization.

61270427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 61270427 is about 7827.5428456189. The cubic root of 61270427 is about 394.2305739808.

The spelling of 61270427 in words is "sixty-one million, two hundred seventy thousand, four hundred twenty-seven".