61240260 has 96 divisors (see below), whose sum is σ = 180633600. Its totient is φ = 15472512.

The previous prime is 61240243. The next prime is 61240261. The reversal of 61240260 is 6204216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61240261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274509 + ... + 274731.

It is an arithmetic number, because the mean of its divisors is an integer number (1881600).

Almost surely, 2^61240260 is an apocalyptic number.

61240260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61240260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90316800).

61240260 is an abundant number, since it is smaller than the sum of its proper divisors (119393340).

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

61240260 is a wasteful number, since it uses less digits than its factorization.

61240260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 61240260 is about 7825.6156307347. The cubic root of 61240260 is about 394.1658624679.

Adding to 61240260 its reverse (6204216), we get a palindrome (67444476).

The spelling of 61240260 in words is "sixty-one million, two hundred forty thousand, two hundred sixty".