61676863 has 4 divisors (see below), whose sum is σ = 61695648. Its totient is φ = 61658080.

The previous prime is 61676861. The next prime is 61676893. The reversal of 61676863 is 36867616.

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 61676863 - 2¹ = 61676861 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 (61676861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031 + ... + 11512.

It is an arithmetic number, because the mean of its divisors is an integer number (15423912).

Almost surely, 2^61676863 is an apocalyptic number.

61676863 is a deficient number, since it is larger than the sum of its proper divisors (18785).

61676863 is a wasteful number, since it uses less digits than its factorization.

61676863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18784.

The product of its digits is 217728, while the sum is 43.

The square root of 61676863 is about 7853.4618481279. The cubic root of 61676863 is about 395.1003601207.

The spelling of 61676863 in words is "sixty-one million, six hundred seventy-six thousand, eight hundred sixty-three".