61784134 has 8 divisors (see below), whose sum is σ = 93945960. Its totient is φ = 30468816.

The previous prime is 61784131. The next prime is 61784153. The reversal of 61784134 is 43148716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61784134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61784131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211444 + ... + 211735.

It is an arithmetic number, because the mean of its divisors is an integer number (11743245).

Almost surely, 2^61784134 is an apocalyptic number.

61784134 is a deficient number, since it is larger than the sum of its proper divisors (32161826).

61784134 is a wasteful number, since it uses less digits than its factorization.

61784134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423254.

The product of its digits is 16128, while the sum is 34.

The square root of 61784134 is about 7860.2884171002. The cubic root of 61784134 is about 395.3292858532.

The spelling of 61784134 in words is "sixty-one million, seven hundred eighty-four thousand, one hundred thirty-four".