61743420 has 36 divisors (see below), whose sum is σ = 187288920. Its totient is φ = 16464864.

The previous prime is 61743419. The next prime is 61743427. The reversal of 61743420 is 2434716.

61743420 is a `hidden beast` number, since 617 + 4 + 3 + 42 + 0 = 666.

61743420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61743427) 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 11 ways as a sum of consecutive naturals, for example, 171330 + ... + 171689.

It is an arithmetic number, because the mean of its divisors is an integer number (5202470).

Almost surely, 2^61743420 is an apocalyptic number.

61743420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61743420 is an abundant number, since it is smaller than the sum of its proper divisors (125545500).

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

61743420 is a wasteful number, since it uses less digits than its factorization.

61743420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343034 (or 343029 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 61743420 is about 7857.6981362228. The cubic root of 61743420 is about 395.2424298257.

The spelling of 61743420 in words is "sixty-one million, seven hundred forty-three thousand, four hundred twenty".