80510705 has 16 divisors (see below), whose sum is σ = 108247104. Its totient is φ = 56969280.

The previous prime is 80510701. The next prime is 80510707. The reversal of 80510705 is 50701508.

It is not a de Polignac number, because 80510705 - 2² = 80510701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80510701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17747 + ... + 21816.

It is an arithmetic number, because the mean of its divisors is an integer number (6765444).

Almost surely, 2^80510705 is an apocalyptic number.

It is an amenable number.

80510705 is a deficient number, since it is larger than the sum of its proper divisors (27736399).

80510705 is a wasteful number, since it uses less digits than its factorization.

80510705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39616.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 80510705 is about 8972.7757689580. The cubic root of 80510705 is about 431.8018942635.

The spelling of 80510705 in words is "eighty million, five hundred ten thousand, seven hundred five".