61045866 has 48 divisors (see below), whose sum is σ = 157812480. Its totient is φ = 17440920.

The previous prime is 61045849. The next prime is 61045889. The reversal of 61045866 is 66854016.

It is a self number, because there is not a number n which added to its sum of digits gives 61045866.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8890 + ... + 14181.

It is an arithmetic number, because the mean of its divisors is an integer number (3287760).

Almost surely, 2^61045866 is an apocalyptic number.

61045866 is an abundant number, since it is smaller than the sum of its proper divisors (96766614).

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

61045866 is a wasteful number, since it uses less digits than its factorization.

61045866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23096 (or 23083 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 61045866 is about 7813.1853939350. The cubic root of 61045866 is about 393.7483555487.

The spelling of 61045866 in words is "sixty-one million, forty-five thousand, eight hundred sixty-six".