61205868 has 36 divisors (see below), whose sum is σ = 160447560. Its totient is φ = 20401632.

The previous prime is 61205867. The next prime is 61205869. The reversal of 61205868 is 86850216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61205867) and next prime (61205869).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61205867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30513 + ... + 32456.

Almost surely, 2^61205868 is an apocalyptic number.

It is an amenable number.

61205868 is an abundant number, since it is smaller than the sum of its proper divisors (99241692).

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

61205868 is a wasteful number, since it uses less digits than its factorization.

61205868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62988 (or 62974 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 61205868 is about 7823.4179231331. The cubic root of 61205868 is about 394.0920619386.

The spelling of 61205868 in words is "sixty-one million, two hundred five thousand, eight hundred sixty-eight".