80699147 has 4 divisors (see below), whose sum is σ = 80886816. Its totient is φ = 80511480.

The previous prime is 80699123. The next prime is 80699149. The reversal of 80699147 is 74199608.

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 80699147 - 2²⁴ = 63921931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80699098 and 80699107.

It is not an unprimeable number, because it can be changed into a prime (80699149) 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, 93188 + ... + 94049.

It is an arithmetic number, because the mean of its divisors is an integer number (20221704).

Almost surely, 2^80699147 is an apocalyptic number.

80699147 is a deficient number, since it is larger than the sum of its proper divisors (187669).

80699147 is a wasteful number, since it uses less digits than its factorization.

80699147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187668.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 80699147 is about 8983.2703955742. The cubic root of 80699147 is about 432.1385211790.

The spelling of 80699147 in words is "eighty million, six hundred ninety-nine thousand, one hundred forty-seven".