61436898 has 24 divisors (see below), whose sum is σ = 133356288. Its totient is φ = 20441592.

The previous prime is 61436897. The next prime is 61436953. The reversal of 61436898 is 89863416.

It is not an unprimeable number, because it can be changed into a prime (61436891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8115 + ... + 13737.

It is an arithmetic number, because the mean of its divisors is an integer number (5556512).

Almost surely, 2^61436898 is an apocalyptic number.

61436898 is an abundant number, since it is smaller than the sum of its proper divisors (71919390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61436898 is a wasteful number, since it uses less digits than its factorization.

61436898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6238 (or 6235 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 61436898 is about 7838.1693015653. The cubic root of 61436898 is about 394.5872909913.

It can be divided in two parts, 6143 and 6898, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 61436898 in words is "sixty-one million, four hundred thirty-six thousand, eight hundred ninety-eight".