801146640 has 160 divisors (see below), whose sum is σ = 2930098176. Its totient is φ = 177200640.

The previous prime is 801146639. The next prime is 801146651. The reversal of 801146640 is 46641108.

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 = 801146598 and 801146607.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44389 + ... + 59771.

Almost surely, 2^801146640 is an apocalyptic number.

801146640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801146640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1465049088).

801146640 is an abundant number, since it is smaller than the sum of its proper divisors (2128951536).

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

801146640 is a wasteful number, since it uses less digits than its factorization.

801146640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15437 (or 15431 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 801146640 is about 28304.5339124318. The cubic root of 801146640 is about 928.7610742774.

Adding to 801146640 its reverse (46641108), we get a palindrome (847787748).

The spelling of 801146640 in words is "eight hundred one million, one hundred forty-six thousand, six hundred forty".