66643050 has 24 divisors (see below), whose sum is σ = 165275136. Its totient is φ = 17771440.

The previous prime is 66642967. The next prime is 66643061. The reversal of 66643050 is 5034666.

It is a super-2 number, since 2×66643050² = 8882592226605000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 66642999 and 66643017.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221994 + ... + 222293.

It is an arithmetic number, because the mean of its divisors is an integer number (6886464).

Almost surely, 2^66643050 is an apocalyptic number.

66643050 is an abundant number, since it is smaller than the sum of its proper divisors (98632086).

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

66643050 is a wasteful number, since it uses less digits than its factorization.

66643050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444302 (or 444297 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 66643050 is about 8163.5194616048. The cubic root of 66643050 is about 405.4322469375.

The spelling of 66643050 in words is "sixty-six million, six hundred forty-three thousand, fifty".