1601787066 has 32 divisors (see below), whose sum is σ = 3576089088. Its totient is φ = 474101040.

The previous prime is 1601787043. The next prime is 1601787067. The reversal of 1601787066 is 6607871061.

It is not an unprimeable number, because it can be changed into a prime (1601787067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279366 + ... + 285041.

It is an arithmetic number, because the mean of its divisors is an integer number (111752784).

Almost surely, 2^1601787066 is an apocalyptic number.

1601787066 is an abundant number, since it is smaller than the sum of its proper divisors (1974302022).

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

1601787066 is a wasteful number, since it uses less digits than its factorization.

1601787066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564466.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1601787066 is about 40022.3320909714. The cubic root of 1601787066 is about 1170.0423843218.

The spelling of 1601787066 in words is "one billion, six hundred one million, seven hundred eighty-seven thousand, sixty-six".