801656436 has 96 divisors (see below), whose sum is σ = 2305336320. Its totient is φ = 211680000.

The previous prime is 801656431. The next prime is 801656461. The reversal of 801656436 is 634656108.

It is a junction number, because it is equal to n+sod(n) for n = 801656394 and 801656403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801656431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59311 + ... + 71561.

It is an arithmetic number, because the mean of its divisors is an integer number (24013920).

Almost surely, 2^801656436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801656436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152668160).

801656436 is an abundant number, since it is smaller than the sum of its proper divisors (1503679884).

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

801656436 is a wasteful number, since it uses less digits than its factorization.

801656436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12325 (or 12323 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 801656436 is about 28313.5380339512. The cubic root of 801656436 is about 928.9580329291.

The spelling of 801656436 in words is "eight hundred one million, six hundred fifty-six thousand, four hundred thirty-six".