61086280 has 16 divisors (see below), whose sum is σ = 137444220. Its totient is φ = 24434496.

The previous prime is 61086271. The next prime is 61086281. The reversal of 61086280 is 8268016.

It can be written as a sum of positive squares in 2 ways, for example, as 60000516 + 1085764 = 7746^2 + 1042^2 .

It is not an unprimeable number, because it can be changed into a prime (61086281) 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, 763539 + ... + 763618.

Almost surely, 2^61086280 is an apocalyptic number.

It is an amenable number.

61086280 is an abundant number, since it is smaller than the sum of its proper divisors (76357940).

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

61086280 is a wasteful number, since it uses less digits than its factorization.

61086280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527168 (or 1527164 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 61086280 is about 7815.7712351373. The cubic root of 61086280 is about 393.8352270372.

The spelling of 61086280 in words is "sixty-one million, eighty-six thousand, two hundred eighty".