61436258 has 16 divisors (see below), whose sum is σ = 99373176. Its totient is φ = 28318080.

The previous prime is 61436257. The next prime is 61436261. The reversal of 61436258 is 85263416.

61436258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60481729 + 954529 = 7777^2 + 977^2 .

It is not an unprimeable number, because it can be changed into a prime (61436257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34838 + ... + 36558.

Almost surely, 2^61436258 is an apocalyptic number.

61436258 is a deficient number, since it is larger than the sum of its proper divisors (37936918).

61436258 is a wasteful number, since it uses less digits than its factorization.

61436258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109.

The product of its digits is 34560, while the sum is 35.

The square root of 61436258 is about 7838.1284755993. The cubic root of 61436258 is about 394.5859208226.

The spelling of 61436258 in words is "sixty-one million, four hundred thirty-six thousand, two hundred fifty-eight".