61347730 has 16 divisors (see below), whose sum is σ = 116921880. Its totient is φ = 23095552.

The previous prime is 61347719. The next prime is 61347733. The reversal of 61347730 is 3774316.

It can be written as a sum of positive squares in 4 ways, for example, as 60575089 + 772641 = 7783^2 + 879^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61347692 and 61347701.

It is not an unprimeable number, because it can be changed into a prime (61347733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180265 + ... + 180604.

Almost surely, 2^61347730 is an apocalyptic number.

61347730 is a deficient number, since it is larger than the sum of its proper divisors (55574150).

61347730 is a wasteful number, since it uses less digits than its factorization.

61347730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360893.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 61347730 is about 7832.4791732886. The cubic root of 61347730 is about 394.3963004712.

The spelling of 61347730 in words is "sixty-one million, three hundred forty-seven thousand, seven hundred thirty".