61106040 has 96 divisors (see below), whose sum is σ = 199648800. Its totient is φ = 16208640.

The previous prime is 61106039. The next prime is 61106047. The reversal of 61106040 is 4060116.

61106040 is a `hidden beast` number, since 61 + 1 + 0 + 604 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61106047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96525 + ... + 97155.

It is an arithmetic number, because the mean of its divisors is an integer number (2079675).

Almost surely, 2^61106040 is an apocalyptic number.

61106040 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 61106040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99824400).

61106040 is an abundant number, since it is smaller than the sum of its proper divisors (138542760).

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

61106040 is a wasteful number, since it uses less digits than its factorization.

61106040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 61106040 is about 7817.0352436202. The cubic root of 61106040 is about 393.8776879908.

Adding to 61106040 its reverse (4060116), we get a palindrome (65166156).

The spelling of 61106040 in words is "sixty-one million, one hundred six thousand, forty".