80695356 has 144 divisors (see below), whose sum is σ = 239016960. Its totient is φ = 21047040.

The previous prime is 80695343. The next prime is 80695357. The reversal of 80695356 is 65359608.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80695357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 346216 + ... + 346448.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 2^80695356 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 80695356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119508480).

80695356 is an abundant number, since it is smaller than the sum of its proper divisors (158321604).

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

80695356 is a wasteful number, since it uses less digits than its factorization.

80695356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 80695356 is about 8983.0593897625. The cubic root of 80695356 is about 432.1317542228.

The spelling of 80695356 in words is "eighty million, six hundred ninety-five thousand, three hundred fifty-six".