61045740 has 72 divisors (see below), whose sum is σ = 211629600. Its totient is φ = 13953024.

The previous prime is 61045687. The next prime is 61045741. The reversal of 61045740 is 4754016.

61045740 is a `hidden beast` number, since 610 + 4 + 5 + 7 + 40 = 666.

It is not an unprimeable number, because it can be changed into a prime (61045741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22965 + ... + 25484.

It is an arithmetic number, because the mean of its divisors is an integer number (2939300).

Almost surely, 2^61045740 is an apocalyptic number.

61045740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61045740 is an abundant number, since it is smaller than the sum of its proper divisors (150583860).

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

61045740 is a wasteful number, since it uses less digits than its factorization.

61045740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48471 (or 48466 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 61045740 is about 7813.1773306383. The cubic root of 61045740 is about 393.7480846468.

Adding to 61045740 its reverse (4754016), we get a palindrome (65799756).

The spelling of 61045740 in words is "sixty-one million, forty-five thousand, seven hundred forty".