61868673 has 6 divisors (see below), whose sum is σ = 89365874. Its totient is φ = 41245776.

The previous prime is 61868663. The next prime is 61868683. The reversal of 61868673 is 37686816.

It is an interprime number because it is at equal distance from previous prime (61868663) and next prime (61868683).

It can be written as a sum of positive squares in only one way, i.e., 48274704 + 13593969 = 6948^2 + 3687^2 .

It is not a de Polignac number, because 61868673 - 2⁵ = 61868641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61868603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3437140 + ... + 3437157.

Almost surely, 2^61868673 is an apocalyptic number.

It is an amenable number.

61868673 is a deficient number, since it is larger than the sum of its proper divisors (27497201).

61868673 is a wasteful number, since it uses less digits than its factorization.

61868673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874303 (or 6874300 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 61868673 is about 7865.6641804745. The cubic root of 61868673 is about 395.5095128724.

The spelling of 61868673 in words is "sixty-one million, eight hundred sixty-eight thousand, six hundred seventy-three".