61534986 has 8 divisors (see below), whose sum is σ = 123069984. Its totient is φ = 20511660.

The previous prime is 61534943. The next prime is 61535003. The reversal of 61534986 is 68943516.

It is a sphenic number, since it is the product of 3 distinct primes.

61534986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5127910 + ... + 5127921.

It is an arithmetic number, because the mean of its divisors is an integer number (15383748).

Almost surely, 2^61534986 is an apocalyptic number.

61534986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61534986 is a wasteful number, since it uses less digits than its factorization.

61534986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255836.

The product of its digits is 155520, while the sum is 42.

The square root of 61534986 is about 7844.4238794191. The cubic root of 61534986 is about 394.7971740841.

The spelling of 61534986 in words is "sixty-one million, five hundred thirty-four thousand, nine hundred eighty-six".