61859863 has 8 divisors (see below), whose sum is σ = 66745728. Its totient is φ = 56992224.

The previous prime is 61859807. The next prime is 61859867. The reversal of 61859863 is 36895816.

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 61859863 - 2²¹ = 59762711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61859867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2970 + ... + 11512.

It is an arithmetic number, because the mean of its divisors is an integer number (8343216).

Almost surely, 2^61859863 is an apocalyptic number.

61859863 is a deficient number, since it is larger than the sum of its proper divisors (4885865).

61859863 is a wasteful number, since it uses less digits than its factorization.

61859863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9113.

The product of its digits is 311040, while the sum is 46.

The square root of 61859863 is about 7865.1041315421. The cubic root of 61859863 is about 395.4907386740.

The spelling of 61859863 in words is "sixty-one million, eight hundred fifty-nine thousand, eight hundred sixty-three".