80628947 has 4 divisors (see below), whose sum is σ = 92147376. Its totient is φ = 69110520.

The previous prime is 80628941. The next prime is 80628959. The reversal of 80628947 is 74982608.

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

It is a cyclic number.

It is not a de Polignac number, because 80628947 - 2¹⁴ = 80612563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80628898 and 80628907.

It is not an unprimeable number, because it can be changed into a prime (80628941) 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, 5759204 + ... + 5759217.

It is an arithmetic number, because the mean of its divisors is an integer number (23036844).

Almost surely, 2^80628947 is an apocalyptic number.

80628947 is a deficient number, since it is larger than the sum of its proper divisors (11518429).

80628947 is a wasteful number, since it uses less digits than its factorization.

80628947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11518428.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 80628947 is about 8979.3622824786. The cubic root of 80628947 is about 432.0131793962.

The spelling of 80628947 in words is "eighty million, six hundred twenty-eight thousand, nine hundred forty-seven".