61882787 has 4 divisors (see below), whose sum is σ = 62262600. Its totient is φ = 61502976.

The previous prime is 61882783. The next prime is 61882823. The reversal of 61882787 is 78728816.

It is a happy number.

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 61882787 - 2² = 61882783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61882783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189662 + ... + 189987.

It is an arithmetic number, because the mean of its divisors is an integer number (15565650).

Almost surely, 2^61882787 is an apocalyptic number.

61882787 is a deficient number, since it is larger than the sum of its proper divisors (379813).

61882787 is a wasteful number, since it uses less digits than its factorization.

61882787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379812.

The product of its digits is 301056, while the sum is 47.

The square root of 61882787 is about 7866.5613199161. The cubic root of 61882787 is about 395.5395862335.

The spelling of 61882787 in words is "sixty-one million, eight hundred eighty-two thousand, seven hundred eighty-seven".