80478757 has 8 divisors (see below), whose sum is σ = 83004416. Its totient is φ = 77982912.

The previous prime is 80478743. The next prime is 80478763. The reversal of 80478757 is 75787408.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80478757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80478707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1908 + ... + 12829.

It is an arithmetic number, because the mean of its divisors is an integer number (10375552).

Almost surely, 2^80478757 is an apocalyptic number.

It is an amenable number.

80478757 is a deficient number, since it is larger than the sum of its proper divisors (2525659).

80478757 is a wasteful number, since it uses less digits than its factorization.

80478757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14907.

The product of its (nonzero) digits is 439040, while the sum is 46.

The square root of 80478757 is about 8970.9953182465. The cubic root of 80478757 is about 431.7447712924.

The spelling of 80478757 in words is "eighty million, four hundred seventy-eight thousand, seven hundred fifty-seven".