61384986 has 32 divisors (see below), whose sum is σ = 146905920. Its totient is φ = 18887472.

The previous prime is 61384979. The next prime is 61384997. The reversal of 61384986 is 68948316.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43020 + ... + 44423.

It is an arithmetic number, because the mean of its divisors is an integer number (4590810).

Almost surely, 2^61384986 is an apocalyptic number.

61384986 is an abundant number, since it is smaller than the sum of its proper divisors (85520934).

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

61384986 is a wasteful number, since it uses less digits than its factorization.

61384986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87467 (or 87461 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 61384986 is about 7834.8571142044. The cubic root of 61384986 is about 394.4761222518.

The spelling of 61384986 in words is "sixty-one million, three hundred eighty-four thousand, nine hundred eighty-six".