61436629 has 2 divisors, whose sum is σ = 61436630. Its totient is φ = 61436628.

The previous prime is 61436603. The next prime is 61436653. The reversal of 61436629 is 92663416.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61074225 + 362404 = 7815^2 + 602^2 .

It is a cyclic number.

It is not a de Polignac number, because 61436629 - 2⁵ = 61436597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61436689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30718314 + 30718315.

It is an arithmetic number, because the mean of its divisors is an integer number (30718315).

Almost surely, 2^61436629 is an apocalyptic number.

It is an amenable number.

61436629 is a deficient number, since it is larger than the sum of its proper divisors (1).

61436629 is an equidigital number, since it uses as much as digits as its factorization.

61436629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 61436629 is about 7838.1521419273. The cubic root of 61436629 is about 394.5867150934.

The spelling of 61436629 in words is "sixty-one million, four hundred thirty-six thousand, six hundred twenty-nine".