61826 has 8 divisors (see below), whose sum is σ = 97680. Its totient is φ = 29268.

The previous prime is 61819. The next prime is 61837. The reversal of 61826 is 62816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776 + ... + 851.

It is an arithmetic number, because the mean of its divisors is an integer number (12210).

2⁶¹⁸²⁶ is an apocalyptic number.

61826 is a deficient number, since it is larger than the sum of its proper divisors (35854).

61826 is a wasteful number, since it uses less digits than its factorization.

61826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648.

The product of its digits is 576, while the sum is 23.

The square root of 61826 is about 248.6483460633. The cubic root of 61826 is about 39.5418559684.

Subtracting 61826 from its reverse (62816), we obtain a triangular number (990 = T₄₄).

The spelling of 61826 in words is "sixty-one thousand, eight hundred twenty-six".