61107040 has 48 divisors (see below), whose sum is σ = 151971120. Its totient is φ = 23155200.

The previous prime is 61107029. The next prime is 61107043. The reversal of 61107040 is 4070116.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 61106999 and 61107017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61107043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7011 + ... + 13090.

It is an arithmetic number, because the mean of its divisors is an integer number (3166065).

Almost surely, 2^61107040 is an apocalyptic number.

It is an amenable number.

61107040 is an abundant number, since it is smaller than the sum of its proper divisors (90864080).

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

61107040 is a wasteful number, since it uses less digits than its factorization.

61107040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20135 (or 20127 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 61107040 is about 7817.0992062273. The cubic root of 61107040 is about 393.8798365812.

Adding to 61107040 its reverse (4070116), we get a palindrome (65177156).

The spelling of 61107040 in words is "sixty-one million, one hundred seven thousand, forty".