61928666 has 8 divisors (see below), whose sum is σ = 93109824. Its totient is φ = 30892060.

The previous prime is 61928663. The next prime is 61928683. The reversal of 61928666 is 66682916.

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 (61928663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35060 + ... + 36783.

It is an arithmetic number, because the mean of its divisors is an integer number (11638728).

Almost surely, 2^61928666 is an apocalyptic number.

61928666 is a deficient number, since it is larger than the sum of its proper divisors (31181158).

61928666 is a wasteful number, since it uses less digits than its factorization.

61928666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72276.

The product of its digits is 186624, while the sum is 44.

The square root of 61928666 is about 7869.4768568184. The cubic root of 61928666 is about 395.6373111894.

The spelling of 61928666 in words is "sixty-one million, nine hundred twenty-eight thousand, six hundred sixty-six".