61158568 has 16 divisors (see below), whose sum is σ = 120708000. Its totient is φ = 28969776.

The previous prime is 61158551. The next prime is 61158569. The reversal of 61158568 is 86585116.

It is a self number, because there is not a number n which added to its sum of digits gives 61158568.

It is not an unprimeable number, because it can be changed into a prime (61158569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201028 + ... + 201331.

It is an arithmetic number, because the mean of its divisors is an integer number (7544250).

Almost surely, 2^61158568 is an apocalyptic number.

It is an amenable number.

61158568 is a deficient number, since it is larger than the sum of its proper divisors (59549432).

61158568 is a wasteful number, since it uses less digits than its factorization.

61158568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402384 (or 402380 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 61158568 is about 7820.3943634576. The cubic root of 61158568 is about 393.9905174352.

The spelling of 61158568 in words is "sixty-one million, one hundred fifty-eight thousand, five hundred sixty-eight".