61394823 has 24 divisors (see below), whose sum is σ = 101556000. Its totient is φ = 35011584.

The previous prime is 61394791. The next prime is 61394857. The reversal of 61394823 is 32849316.

It is not a de Polignac number, because 61394823 - 2⁵ = 61394791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61394023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58003 + ... + 59051.

It is an arithmetic number, because the mean of its divisors is an integer number (4231500).

Almost surely, 2^61394823 is an apocalyptic number.

61394823 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

61394823 is a deficient number, since it is larger than the sum of its proper divisors (40161177).

61394823 is a wasteful number, since it uses less digits than its factorization.

61394823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1988 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 61394823 is about 7835.4848605559. The cubic root of 61394823 is about 394.4971928458.

The spelling of 61394823 in words is "sixty-one million, three hundred ninety-four thousand, eight hundred twenty-three".