61080000 has 140 divisors (see below), whose sum is σ = 202341480. Its totient is φ = 16256000.

The previous prime is 61079999. The next prime is 61080001. The reversal of 61080000 is 8016.

It is an interprime number because it is at equal distance from previous prime (61079999) and next prime (61080001).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61080001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119746 + ... + 120254.

Almost surely, 2^61080000 is an apocalyptic number.

61080000 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 61080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101170740).

61080000 is an abundant number, since it is smaller than the sum of its proper divisors (141261480).

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

61080000 is an equidigital number, since it uses as much as digits as its factorization.

61080000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 61080000 is about 7815.3694730320. The cubic root of 61080000 is about 393.8217304441.

Adding to 61080000 its reverse (8016), we get a palindrome (61088016).

The spelling of 61080000 in words is "sixty-one million, eighty thousand".