61994849 has 16 divisors (see below), whose sum is σ = 73507200. Its totient is φ = 52249680.

The previous prime is 61994839. The next prime is 61994873. The reversal of 61994849 is 94849916.

It is a happy number.

It is not a de Polignac number, because 61994849 - 2¹⁶ = 61929313 is a prime.

It is a super-2 number, since 2×61994849² = 7686722605065602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61994797 and 61994806.

It is not an unprimeable number, because it can be changed into a prime (61994839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19442 + ... + 22404.

It is an arithmetic number, because the mean of its divisors is an integer number (4594200).

Almost surely, 2^61994849 is an apocalyptic number.

It is an amenable number.

61994849 is a deficient number, since it is larger than the sum of its proper divisors (11512351).

61994849 is an equidigital number, since it uses as much as digits as its factorization.

61994849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045 (or 3031 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 61994849 is about 7873.6807783908. The cubic root of 61994849 is about 395.7781998582.

The spelling of 61994849 in words is "sixty-one million, nine hundred ninety-four thousand, eight hundred forty-nine".