61672986 has 12 divisors (see below), whose sum is σ = 133624842. Its totient is φ = 20557656.

The previous prime is 61672967. The next prime is 61672987. The reversal of 61672986 is 68927616.

61672986 is a `hidden beast` number, since 616 + 7 + 29 + 8 + 6 = 666.

61672986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55577025 + 6095961 = 7455^2 + 2469^2 .

It is not an unprimeable number, because it can be changed into a prime (61672987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1713121 + ... + 1713156.

Almost surely, 2^61672986 is an apocalyptic number.

61672986 is an abundant number, since it is smaller than the sum of its proper divisors (71951856).

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

61672986 is a wasteful number, since it uses less digits than its factorization.

61672986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426285 (or 3426282 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 61672986 is about 7853.2150104273. The cubic root of 61672986 is about 395.0920812939.

The spelling of 61672986 in words is "sixty-one million, six hundred seventy-two thousand, nine hundred eighty-six".