61890260 has 24 divisors (see below), whose sum is σ = 134163456. Its totient is φ = 23957280.

The previous prime is 61890247. The next prime is 61890271. The reversal of 61890260 is 6209816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49292 + ... + 50531.

It is an arithmetic number, because the mean of its divisors is an integer number (5590144).

Almost surely, 2^61890260 is an apocalyptic number.

It is an amenable number.

61890260 is an abundant number, since it is smaller than the sum of its proper divisors (72273196).

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

61890260 is a wasteful number, since it uses less digits than its factorization.

61890260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99863 (or 99861 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 61890260 is about 7867.0362907514. The cubic root of 61890260 is about 395.5555074532. Note that the first 4 decimals are identical.

The spelling of 61890260 in words is "sixty-one million, eight hundred ninety thousand, two hundred sixty".