61787374 has 8 divisors (see below), whose sum is σ = 101106648. Its totient is φ = 28085160.

The previous prime is 61787359. The next prime is 61787377. The reversal of 61787374 is 47378716.

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 61787374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61787377) 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 3 ways as a sum of consecutive naturals, for example, 1404237 + ... + 1404280.

It is an arithmetic number, because the mean of its divisors is an integer number (12638331).

Almost surely, 2^61787374 is an apocalyptic number.

61787374 is a deficient number, since it is larger than the sum of its proper divisors (39319274).

61787374 is a wasteful number, since it uses less digits than its factorization.

61787374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808530.

The product of its digits is 197568, while the sum is 43.

The square root of 61787374 is about 7860.4945137059. The cubic root of 61787374 is about 395.3361961736.

The spelling of 61787374 in words is "sixty-one million, seven hundred eighty-seven thousand, three hundred seventy-four".