61799538 has 16 divisors (see below), whose sum is σ = 124430400. Its totient is φ = 20461296.

The previous prime is 61799503. The next prime is 61799561. The reversal of 61799538 is 83599716.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33670 + ... + 35457.

It is an arithmetic number, because the mean of its divisors is an integer number (7776900).

Almost surely, 2^61799538 is an apocalyptic number.

61799538 is an abundant number, since it is smaller than the sum of its proper divisors (62630862).

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

61799538 is a wasteful number, since it uses less digits than its factorization.

61799538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69281.

The product of its digits is 408240, while the sum is 48.

The square root of 61799538 is about 7861.2682182966. The cubic root of 61799538 is about 395.3621375790.

The spelling of 61799538 in words is "sixty-one million, seven hundred ninety-nine thousand, five hundred thirty-eight".