80817406 has 4 divisors (see below), whose sum is σ = 121226112. Its totient is φ = 40408702.

The previous prime is 80817391. The next prime is 80817409. The reversal of 80817406 is 60471808.

It is a happy number.

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

It is a super-2 number, since 2×80817406² = 13062906225137672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80817409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20204350 + ... + 20204353.

It is an arithmetic number, because the mean of its divisors is an integer number (30306528).

Almost surely, 2^80817406 is an apocalyptic number.

80817406 is a deficient number, since it is larger than the sum of its proper divisors (40408706).

80817406 is a wasteful number, since it uses less digits than its factorization.

80817406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40408705.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 80817406 is about 8989.8501656034. The cubic root of 80817406 is about 432.3495078223.

The spelling of 80817406 in words is "eighty million, eight hundred seventeen thousand, four hundred six".