61787345 has 8 divisors (see below), whose sum is σ = 75869376. Its totient is φ = 48280176.

The previous prime is 61787317. The next prime is 61787353. The reversal of 61787345 is 54378716.

61787345 is nontrivially palindromic in base 15.

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

It is a cyclic number.

It is not a de Polignac number, because 61787345 - 2¹⁰ = 61786321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143477 + ... + 143906.

It is an arithmetic number, because the mean of its divisors is an integer number (9483672).

Almost surely, 2^61787345 is an apocalyptic number.

It is an amenable number.

61787345 is a deficient number, since it is larger than the sum of its proper divisors (14082031).

61787345 is a wasteful number, since it uses less digits than its factorization.

61787345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287431.

The product of its digits is 141120, while the sum is 41.

The square root of 61787345 is about 7860.4926690380. The cubic root of 61787345 is about 395.3361343231.

The spelling of 61787345 in words is "sixty-one million, seven hundred eighty-seven thousand, three hundred forty-five".