61860663 has 6 divisors (see below), whose sum is σ = 89354304. Its totient is φ = 41240436.

The previous prime is 61860613. The next prime is 61860679. The reversal of 61860663 is 36606816.

It is not a de Polignac number, because 61860663 - 2⁹ = 61860151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61860613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3436695 + ... + 3436712.

It is an arithmetic number, because the mean of its divisors is an integer number (14892384).

Almost surely, 2^61860663 is an apocalyptic number.

61860663 is a deficient number, since it is larger than the sum of its proper divisors (27493641).

61860663 is a wasteful number, since it uses less digits than its factorization.

61860663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873413 (or 6873410 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 61860663 is about 7865.1549889370. The cubic root of 61860663 is about 395.4924435556.

The spelling of 61860663 in words is "sixty-one million, eight hundred sixty thousand, six hundred sixty-three".