61089844 has 6 divisors (see below), whose sum is σ = 106907234. Its totient is φ = 30544920.

The previous prime is 61089829. The next prime is 61089859. The reversal of 61089844 is 44898016.

It is an interprime number because it is at equal distance from previous prime (61089829) and next prime (61089859).

It can be written as a sum of positive squares in only one way, i.e., 61027344 + 62500 = 7812^2 + 250^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61089797 and 61089806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7636227 + ... + 7636234.

Almost surely, 2^61089844 is an apocalyptic number.

It is an amenable number.

61089844 is a deficient number, since it is larger than the sum of its proper divisors (45817390).

61089844 is a wasteful number, since it uses less digits than its factorization.

61089844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15272465 (or 15272463 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 61089844 is about 7815.9992323439. Note that the first 3 decimals coincide. The cubic root of 61089844 is about 393.8428861572.

The spelling of 61089844 in words is "sixty-one million, eighty-nine thousand, eight hundred forty-four".