61828566 has 8 divisors (see below), whose sum is σ = 123657144. Its totient is φ = 20609520.

The previous prime is 61828549. The next prime is 61828573. The reversal of 61828566 is 66582816.

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

61828566 is an admirable number.

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, 5152375 + ... + 5152386.

It is an arithmetic number, because the mean of its divisors is an integer number (15457143).

Almost surely, 2^61828566 is an apocalyptic number.

61828566 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.

61828566 is a wasteful number, since it uses less digits than its factorization.

61828566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10304766.

The product of its digits is 138240, while the sum is 42.

The square root of 61828566 is about 7863.1142685325. The cubic root of 61828566 is about 395.4240300358.

The spelling of 61828566 in words is "sixty-one million, eight hundred twenty-eight thousand, five hundred sixty-six".