801630 has 32 divisors (see below), whose sum is σ = 2138400. Its totient is φ = 213696.

The previous prime is 801617. The next prime is 801631. The reversal of 801630 is 36108.

It is a super-2 number, since 2×801630² = 1285221313800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 801630.

It is not an unprimeable number, because it can be changed into a prime (801631) by changing a digit.

801630 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1215 + ... + 1754.

It is an arithmetic number, because the mean of its divisors is an integer number (66825).

2⁸⁰¹⁶³⁰ is an apocalyptic number.

801630 is an abundant number, since it is smaller than the sum of its proper divisors (1336770).

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

801630 is a wasteful number, since it uses less digits than its factorization.

801630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 801630 is about 895.3379250317. The cubic root of 801630 is about 92.8947821487.

Adding to 801630 its reverse (36108), we get a palindrome (837738).

It can be divided in two parts, 801 and 630, that added together give a triangular number (1431 = T₅₃).

The spelling of 801630 in words is "eight hundred one thousand, six hundred thirty".