61307898 has 16 divisors (see below), whose sum is σ = 122829696. Its totient is φ = 20400320.

The previous prime is 61307891. The next prime is 61307923. The reversal of 61307898 is 89870316.

It is not an unprimeable number, because it can be changed into a prime (61307891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5058 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (7676856).

Almost surely, 2^61307898 is an apocalyptic number.

61307898 is an abundant number, since it is smaller than the sum of its proper divisors (61521798).

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

61307898 is a wasteful number, since it uses less digits than its factorization.

61307898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17829.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 61307898 is about 7829.9360150642. The cubic root of 61307898 is about 394.3109238015.

It can be divided in two parts, 6130 and 7898, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 61307898 in words is "sixty-one million, three hundred seven thousand, eight hundred ninety-eight".