61120730 has 24 divisors (see below), whose sum is σ = 120930516. Its totient is φ = 22225280.

The previous prime is 61120721. The next prime is 61120753. The reversal of 61120730 is 3702116.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58782889 + 2337841 = 7667^2 + 1529^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24047 + ... + 26466.

Almost surely, 2^61120730 is an apocalyptic number.

61120730 is a deficient number, since it is larger than the sum of its proper divisors (59809786).

61120730 is a wasteful number, since it uses less digits than its factorization.

61120730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50542 (or 50531 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 61120730 is about 7817.9748016990. The cubic root of 61120730 is about 393.9092484260.

Adding to 61120730 its reverse (3702116), we get a palindrome (64822846).

The spelling of 61120730 in words is "sixty-one million, one hundred twenty thousand, seven hundred thirty".