61828587 has 12 divisors (see below), whose sum is σ = 89376144. Its totient is φ = 41187600.

The previous prime is 61828573. The next prime is 61828589. The reversal of 61828587 is 78582816.

61828587 is a `hidden beast` number, since 61 + 8 + 2 + 8 + 587 = 666.

It is not a de Polignac number, because 61828587 - 2⁶ = 61828523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61828589) 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 11 ways as a sum of consecutive naturals, for example, 21613 + ... + 24305.

It is an arithmetic number, because the mean of its divisors is an integer number (7448012).

Almost surely, 2^61828587 is an apocalyptic number.

61828587 is a deficient number, since it is larger than the sum of its proper divisors (27547557).

61828587 is a wasteful number, since it uses less digits than its factorization.

61828587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250 (or 5247 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 61828587 is about 7863.1156038812. The cubic root of 61828587 is about 395.4240748042.

The spelling of 61828587 in words is "sixty-one million, eight hundred twenty-eight thousand, five hundred eighty-seven".