61007706 has 48 divisors (see below), whose sum is σ = 138701160. Its totient is φ = 19353600.

The previous prime is 61007701. The next prime is 61007719. The reversal of 61007706 is 60770016.

It can be written as a sum of positive squares in 4 ways, for example, as 60980481 + 27225 = 7809^2 + 165^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61007706.

It is not an unprimeable number, because it can be changed into a prime (61007701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37306 + ... + 38906.

Almost surely, 2^61007706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61007706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69350580).

61007706 is an abundant number, since it is smaller than the sum of its proper divisors (77693454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61007706 is a wasteful number, since it uses less digits than its factorization.

61007706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1708 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 61007706 is about 7810.7429864258. The cubic root of 61007706 is about 393.6662939222. Note that the first 3 decimals are identical.

The spelling of 61007706 in words is "sixty-one million, seven thousand, seven hundred six".