61822 has 4 divisors (see below), whose sum is σ = 92736. Its totient is φ = 30910.

The previous prime is 61819. The next prime is 61837. The reversal of 61822 is 22816.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61822.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15454 + ... + 15457.

It is an arithmetic number, because the mean of its divisors is an integer number (23184).

2⁶¹⁸²² is an apocalyptic number.

61822 is a deficient number, since it is larger than the sum of its proper divisors (30914).

61822 is a wasteful number, since it uses less digits than its factorization.

61822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30913.

The product of its digits is 192, while the sum is 19.

The square root of 61822 is about 248.6403024451. The cubic root of 61822 is about 39.5410031943.

The spelling of 61822 in words is "sixty-one thousand, eight hundred twenty-two".