61966858 has 8 divisors (see below), whose sum is σ = 94704228. Its totient is φ = 30398784.

The previous prime is 61966837. The next prime is 61966859. The reversal of 61966858 is 85866916.

It can be written as a sum of positive squares in 2 ways, for example, as 58018689 + 3948169 = 7617^2 + 1987^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61966859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292191 + ... + 292402.

Almost surely, 2^61966858 is an apocalyptic number.

61966858 is a deficient number, since it is larger than the sum of its proper divisors (32737370).

61966858 is a wasteful number, since it uses less digits than its factorization.

61966858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584648.

The product of its digits is 622080, while the sum is 49.

The square root of 61966858 is about 7871.9030735903. The cubic root of 61966858 is about 395.7186255791.

The spelling of 61966858 in words is "sixty-one million, nine hundred sixty-six thousand, eight hundred fifty-eight".