61389800 has 24 divisors (see below), whose sum is σ = 142731750. Its totient is φ = 24555840.

The previous prime is 61389793. The next prime is 61389803. The reversal of 61389800 is 898316.

It can be written as a sum of positive squares in 3 ways, for example, as 54493924 + 6895876 = 7382^2 + 2626^2 .

It is not an unprimeable number, because it can be changed into a prime (61389803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153275 + ... + 153674.

Almost surely, 2^61389800 is an apocalyptic number.

It is an amenable number.

61389800 is an abundant number, since it is smaller than the sum of its proper divisors (81341950).

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

61389800 is a wasteful number, since it uses less digits than its factorization.

61389800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306965 (or 306956 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 61389800 is about 7835.1643250158. The cubic root of 61389800 is about 394.4864339938.

The spelling of 61389800 in words is "sixty-one million, three hundred eighty-nine thousand, eight hundred".