61247629 has 2 divisors, whose sum is σ = 61247630. Its totient is φ = 61247628.

The previous prime is 61247579. The next prime is 61247633. The reversal of 61247629 is 92674216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60419529 + 828100 = 7773^2 + 910^2 .

It is a cyclic number.

It is not a de Polignac number, because 61247629 - 2¹⁵ = 61214861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61247129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30623814 + 30623815.

It is an arithmetic number, because the mean of its divisors is an integer number (30623815).

Almost surely, 2^61247629 is an apocalyptic number.

It is an amenable number.

61247629 is a deficient number, since it is larger than the sum of its proper divisors (1).

61247629 is an equidigital number, since it uses as much as digits as its factorization.

61247629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 61247629 is about 7826.0864421497. The cubic root of 61247629 is about 394.1816717397.

The spelling of 61247629 in words is "sixty-one million, two hundred forty-seven thousand, six hundred twenty-nine".