61141730 has 32 divisors (see below), whose sum is σ = 119420784. Its totient is φ = 22404096.

The previous prime is 61141711. The next prime is 61141739. The reversal of 61141730 is 3714116.

It can be written as a sum of positive squares in 8 ways, for example, as 12880921 + 48260809 = 3589^2 + 6947^2 .

It is a super-2 number, since 2×61141730² = 7476622294785800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61141696 and 61141705.

It is not an unprimeable number, because it can be changed into a prime (61141739) 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, 16094 + ... + 19526.

Almost surely, 2^61141730 is an apocalyptic number.

61141730 is a deficient number, since it is larger than the sum of its proper divisors (58279054).

61141730 is a wasteful number, since it uses less digits than its factorization.

61141730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 61141730 is about 7819.3177451744. The cubic root of 61141730 is about 393.9543566733.

Adding to 61141730 its reverse (3714116), we get a palindrome (64855846).

The spelling of 61141730 in words is "sixty-one million, one hundred forty-one thousand, seven hundred thirty".