61040790 has 80 divisors (see below), whose sum is σ = 165440880. Its totient is φ = 16148160.

The previous prime is 61040783. The next prime is 61040797. The reversal of 61040790 is 9704016.

61040790 is a `hidden beast` number, since 610 + 40 + 7 + 9 + 0 = 666.

61040790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61040783) and next prime (61040797).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61040797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 144780 + ... + 145200.

It is an arithmetic number, because the mean of its divisors is an integer number (2068011).

Almost surely, 2^61040790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61040790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82720440).

61040790 is an abundant number, since it is smaller than the sum of its proper divisors (104400090).

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

61040790 is a wasteful number, since it uses less digits than its factorization.

61040790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 61040790 is about 7812.8605516802. The cubic root of 61040790 is about 393.7374417763.

The spelling of 61040790 in words is "sixty-one million, forty thousand, seven hundred ninety".