61098280 has 16 divisors (see below), whose sum is σ = 137471220. Its totient is φ = 24439296.

The previous prime is 61098253. The next prime is 61098283. The reversal of 61098280 is 8289016.

It can be written as a sum of positive squares in 2 ways, for example, as 60559524 + 538756 = 7782^2 + 734^2 .

It is not an unprimeable number, because it can be changed into a prime (61098283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763689 + ... + 763768.

Almost surely, 2^61098280 is an apocalyptic number.

It is an amenable number.

61098280 is an abundant number, since it is smaller than the sum of its proper divisors (76372940).

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

61098280 is a wasteful number, since it uses less digits than its factorization.

61098280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527468 (or 1527464 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 61098280 is about 7816.5388759988. The cubic root of 61098280 is about 393.8610141331.

The spelling of 61098280 in words is "sixty-one million, ninety-eight thousand, two hundred eighty".