80477861 has 8 divisors (see below), whose sum is σ = 82368000. Its totient is φ = 78608880.

The previous prime is 80477857. The next prime is 80477867. The reversal of 80477861 is 16877408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80477861 - 2² = 80477857 is a prime.

It is a super-2 number, since 2×80477861² = 12953372222270642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80477867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2540 + ... + 12938.

It is an arithmetic number, because the mean of its divisors is an integer number (10296000).

Almost surely, 2^80477861 is an apocalyptic number.

It is an amenable number.

80477861 is a deficient number, since it is larger than the sum of its proper divisors (1890139).

80477861 is a wasteful number, since it uses less digits than its factorization.

80477861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10579.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 80477861 is about 8970.9453793901. The cubic root of 80477861 is about 431.7431690279.

The spelling of 80477861 in words is "eighty million, four hundred seventy-seven thousand, eight hundred sixty-one".