61806806 has 8 divisors (see below), whose sum is σ = 92743680. Its totient is φ = 30892248.

The previous prime is 61806799. The next prime is 61806817. The reversal of 61806806 is 60860816.

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

It is a congruent 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, 7220 + ... + 13256.

It is an arithmetic number, because the mean of its divisors is an integer number (11592960).

Almost surely, 2^61806806 is an apocalyptic number.

61806806 is a deficient number, since it is larger than the sum of its proper divisors (30936874).

61806806 is a wasteful number, since it uses less digits than its factorization.

61806806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11158.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 61806806 is about 7861.7304710859. The cubic root of 61806806 is about 395.3776359655.

The spelling of 61806806 in words is "sixty-one million, eight hundred six thousand, eight hundred six".