61947944 has 16 divisors (see below), whose sum is σ = 120158100. Its totient is φ = 29905792.

The previous prime is 61947931. The next prime is 61947959. The reversal of 61947944 is 44974916.

It can be written as a sum of positive squares in 2 ways, for example, as 61811044 + 136900 = 7862^2 + 370^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61947895 and 61947904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133277 + ... + 133740.

Almost surely, 2^61947944 is an apocalyptic number.

It is an amenable number.

61947944 is a deficient number, since it is larger than the sum of its proper divisors (58210156).

61947944 is a wasteful number, since it uses less digits than its factorization.

61947944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267052 (or 267048 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 61947944 is about 7870.7016205673. The cubic root of 61947944 is about 395.6783600568.

The spelling of 61947944 in words is "sixty-one million, nine hundred forty-seven thousand, nine hundred forty-four".