61117930 has 8 divisors (see below), whose sum is σ = 110012292. Its totient is φ = 24447168.

The previous prime is 61117897. The next prime is 61117933. The reversal of 61117930 is 3971116.

It can be written as a sum of positive squares in 2 ways, for example, as 60202081 + 915849 = 7759^2 + 957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61117933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055887 + ... + 3055906.

Almost surely, 2^61117930 is an apocalyptic number.

61117930 is a deficient number, since it is larger than the sum of its proper divisors (48894362).

61117930 is a wasteful number, since it uses less digits than its factorization.

61117930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111800.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 61117930 is about 7817.7957251389. The cubic root of 61117930 is about 393.9032332124.

It can be divided in two parts, 6111 and 7930, that added together give a palindrome (14041).

The spelling of 61117930 in words is "sixty-one million, one hundred seventeen thousand, nine hundred thirty".