61861366 has 8 divisors (see below), whose sum is σ = 106048080. Its totient is φ = 26512008.

The previous prime is 61861363. The next prime is 61861367. The reversal of 61861366 is 66316816.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61861361) 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, 2209321 + ... + 2209348.

It is an arithmetic number, because the mean of its divisors is an integer number (13256010).

Almost surely, 2^61861366 is an apocalyptic number.

61861366 is a deficient number, since it is larger than the sum of its proper divisors (44186714).

61861366 is a wasteful number, since it uses less digits than its factorization.

61861366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418678.

The product of its digits is 31104, while the sum is 37.

The square root of 61861366 is about 7865.1996796013. The cubic root of 61861366 is about 395.4939417082.

The spelling of 61861366 in words is "sixty-one million, eight hundred sixty-one thousand, three hundred sixty-six".