61440498 has 128 divisors (see below), whose sum is σ = 168099840. Its totient is φ = 16251840.

The previous prime is 61440493. The next prime is 61440517. The reversal of 61440498 is 89404416.

It is a happy number.

61440498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61440493) 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 63 ways as a sum of consecutive naturals, for example, 321583 + ... + 321773.

It is an arithmetic number, because the mean of its divisors is an integer number (1313280).

Almost surely, 2^61440498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61440498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84049920).

61440498 is an abundant number, since it is smaller than the sum of its proper divisors (106659342).

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

61440498 is a wasteful number, since it uses less digits than its factorization.

61440498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 61440498 is about 7838.3989436619. The cubic root of 61440498 is about 394.5949980129.

The spelling of 61440498 in words is "sixty-one million, four hundred forty thousand, four hundred ninety-eight".