61000578 has 12 divisors (see below), whose sum is σ = 132167958. Its totient is φ = 20333520.

The previous prime is 61000571. The next prime is 61000727. The reversal of 61000578 is 87500016.

It can be written as a sum of positive squares in only one way, i.e., 59954049 + 1046529 = 7743^2 + 1023^2 .

It is not an unprimeable number, because it can be changed into a prime (61000571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1694443 + ... + 1694478.

Almost surely, 2^61000578 is an apocalyptic number.

61000578 is an abundant number, since it is smaller than the sum of its proper divisors (71167380).

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

61000578 is a wasteful number, since it uses less digits than its factorization.

61000578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388929 (or 3388926 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 61000578 is about 7810.2866784773. The cubic root of 61000578 is about 393.6509616371.

The spelling of 61000578 in words is "sixty-one million, five hundred seventy-eight", and thus it is an aban number.