61868903 has 4 divisors (see below), whose sum is σ = 62740368. Its totient is φ = 60997440.

The previous prime is 61868881. The next prime is 61868927. The reversal of 61868903 is 30986816.

It is a happy number.

61868903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61868903 - 2²⁴ = 45091687 is a prime.

It is a super-2 number, since 2×61868903² = 7655522316846818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61868003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435626 + ... + 435767.

It is an arithmetic number, because the mean of its divisors is an integer number (15685092).

Almost surely, 2^61868903 is an apocalyptic number.

61868903 is a deficient number, since it is larger than the sum of its proper divisors (871465).

61868903 is an equidigital number, since it uses as much as digits as its factorization.

61868903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871464.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 61868903 is about 7865.6788009682. The cubic root of 61868903 is about 395.5100029808.

The spelling of 61868903 in words is "sixty-one million, eight hundred sixty-eight thousand, nine hundred three".