802640107 has 4 divisors (see below), whose sum is σ = 821306200. Its totient is φ = 783974016.

The previous prime is 802640099. The next prime is 802640147. The reversal of 802640107 is 701046208.

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 802640107 - 2³ = 802640099 is a prime.

It is a super-2 number, since 2×802640107² = 1288462282729942898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802640147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9332982 + ... + 9333067.

It is an arithmetic number, because the mean of its divisors is an integer number (205326550).

Almost surely, 2^802640107 is an apocalyptic number.

802640107 is a deficient number, since it is larger than the sum of its proper divisors (18666093).

802640107 is a wasteful number, since it uses less digits than its factorization.

802640107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18666092.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 802640107 is about 28330.9037448508. The cubic root of 802640107 is about 929.3378363529.

The spelling of 802640107 in words is "eight hundred two million, six hundred forty thousand, one hundred seven".