80837641 has 4 divisors (see below), whose sum is σ = 80881812. Its totient is φ = 80793472.

The previous prime is 80837639. The next prime is 80837693. The reversal of 80837641 is 14673808.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57836025 + 23001616 = 7605^2 + 4796^2 .

It is a cyclic number.

It is not a de Polignac number, because 80837641 - 2¹ = 80837639 is a prime.

It is a super-3 number, since 3×80837641³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80837641.

It is not an unprimeable number, because it can be changed into a prime (80837621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19216 + ... + 23041.

It is an arithmetic number, because the mean of its divisors is an integer number (20220453).

Almost surely, 2^80837641 is an apocalyptic number.

It is an amenable number.

80837641 is a deficient number, since it is larger than the sum of its proper divisors (44171).

80837641 is a wasteful number, since it uses less digits than its factorization.

80837641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44170.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 80837641 is about 8990.9755310533. The cubic root of 80837641 is about 432.3855885903.

The spelling of 80837641 in words is "eighty million, eight hundred thirty-seven thousand, six hundred forty-one".