61994223 has 48 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 36571392.

The previous prime is 61994201. The next prime is 61994227. The reversal of 61994223 is 32249916.

It is not a de Polignac number, because 61994223 - 2¹³ = 61986031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61994227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277890 + ... + 278112.

It is an arithmetic number, because the mean of its divisors is an integer number (2096640).

Almost surely, 2^61994223 is an apocalyptic number.

61994223 is a deficient number, since it is larger than the sum of its proper divisors (38644497).

61994223 is a wasteful number, since it uses less digits than its factorization.

61994223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 345 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 61994223 is about 7873.6410255993. The cubic root of 61994223 is about 395.7768677153.

The spelling of 61994223 in words is "sixty-one million, nine hundred ninety-four thousand, two hundred twenty-three".