801990632 has 16 divisors (see below), whose sum is σ = 1512427140. Its totient is φ = 398676736.

The previous prime is 801990619. The next prime is 801990641. The reversal of 801990632 is 236099108.

It can be written as a sum of positive squares in 2 ways, for example, as 757020196 + 44970436 = 27514^2 + 6706^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 288353 + ... + 291120.

Almost surely, 2^801990632 is an apocalyptic number.

It is an amenable number.

801990632 is a deficient number, since it is larger than the sum of its proper divisors (710436508).

801990632 is a wasteful number, since it uses less digits than its factorization.

801990632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579652 (or 579648 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 801990632 is about 28319.4391187396. The cubic root of 801990632 is about 929.0871035692.

The spelling of 801990632 in words is "eight hundred one million, nine hundred ninety thousand, six hundred thirty-two".