805470307 has 4 divisors (see below), whose sum is σ = 805528240. Its totient is φ = 805412376.

The previous prime is 805470299. The next prime is 805470311. The reversal of 805470307 is 703074508.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(805470307) divides (805470307-1)³.

It is a cyclic number.

It is not a de Polignac number, because 805470307 - 2³ = 805470299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805470317) 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, 5794 + ... + 40552.

It is an arithmetic number, because the mean of its divisors is an integer number (201382060).

Almost surely, 2^805470307 is an apocalyptic number.

805470307 is the 23173-rd pentagonal number.

805470307 is a deficient number, since it is larger than the sum of its proper divisors (57933).

805470307 is a wasteful number, since it uses less digits than its factorization.

805470307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57932.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 805470307 is about 28380.8087798780. The cubic root of 805470307 is about 930.4288718362.

The spelling of 805470307 in words is "eight hundred five million, four hundred seventy thousand, three hundred seven".