61944897 has 32 divisors (see below), whose sum is σ = 97377280. Its totient is φ = 34292160.

The previous prime is 61944893. The next prime is 61944901. The reversal of 61944897 is 79844916.

It is an interprime number because it is at equal distance from previous prime (61944893) and next prime (61944901).

It is not a de Polignac number, because 61944897 - 2² = 61944893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61944893) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 163254 + ... + 163632.

It is an arithmetic number, because the mean of its divisors is an integer number (3043040).

Almost surely, 2^61944897 is an apocalyptic number.

It is an amenable number.

61944897 is a deficient number, since it is larger than the sum of its proper divisors (35432383).

61944897 is a wasteful number, since it uses less digits than its factorization.

61944897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its digits is 435456, while the sum is 48.

The square root of 61944897 is about 7870.5080522162. The cubic root of 61944897 is about 395.6718726113.

The spelling of 61944897 in words is "sixty-one million, nine hundred forty-four thousand, eight hundred ninety-seven".