61943380 has 12 divisors (see below), whose sum is σ = 130081140. Its totient is φ = 24777344.

The previous prime is 61943351. The next prime is 61943383. The reversal of 61943380 is 8334916.

61943380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 18541636 + 43401744 = 4306^2 + 6588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61943383) 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 3 ways as a sum of consecutive naturals, for example, 1548565 + ... + 1548604.

It is an arithmetic number, because the mean of its divisors is an integer number (10840095).

Almost surely, 2^61943380 is an apocalyptic number.

It is an amenable number.

61943380 is an abundant number, since it is smaller than the sum of its proper divisors (68137760).

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

61943380 is a wasteful number, since it uses less digits than its factorization.

61943380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097178 (or 3097176 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 61943380 is about 7870.4116791944. The cubic root of 61943380 is about 395.6686426485.

The spelling of 61943380 in words is "sixty-one million, nine hundred forty-three thousand, three hundred eighty".