61764543 has 6 divisors (see below), whose sum is σ = 89215464. Its totient is φ = 41176356.

The previous prime is 61764539. The next prime is 61764551. The reversal of 61764543 is 34546716.

It is a happy number.

61764543 is a `hidden beast` number, since 6 + 1 + 7 + 645 + 4 + 3 = 666.

It is not a de Polignac number, because 61764543 - 2² = 61764539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61764498 and 61764507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61764503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3431355 + ... + 3431372.

It is an arithmetic number, because the mean of its divisors is an integer number (14869244).

Almost surely, 2^61764543 is an apocalyptic number.

61764543 is a deficient number, since it is larger than the sum of its proper divisors (27450921).

61764543 is a wasteful number, since it uses less digits than its factorization.

61764543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862733 (or 6862730 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 61764543 is about 7859.0421172049. The cubic root of 61764543 is about 395.2874967277.

The spelling of 61764543 in words is "sixty-one million, seven hundred sixty-four thousand, five hundred forty-three".