61117389 has 16 divisors (see below), whose sum is σ = 90758400. Its totient is φ = 40648608.

The previous prime is 61117369. The next prime is 61117391. The reversal of 61117389 is 98371116.

61117389 is a `hidden beast` number, since 611 + 1 + 7 + 38 + 9 = 666.

It is not a de Polignac number, because 61117389 - 2¹³ = 61109197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61117349) 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, 10057 + ... + 14945.

It is an arithmetic number, because the mean of its divisors is an integer number (5672400).

Almost surely, 2^61117389 is an apocalyptic number.

It is an amenable number.

61117389 is a deficient number, since it is larger than the sum of its proper divisors (29641011).

61117389 is a wasteful number, since it uses less digits than its factorization.

61117389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361 (or 5355 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 61117389 is about 7817.7611245164. The cubic root of 61117389 is about 393.9020709660.

The spelling of 61117389 in words is "sixty-one million, one hundred seventeen thousand, three hundred eighty-nine".