7896905 has 4 divisors (see below), whose sum is σ = 9476292. Its totient is φ = 6317520.

The previous prime is 7896901. The next prime is 7896937. The reversal of 7896905 is 5096987.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5973136 + 1923769 = 2444^2 + 1387^2 .

It is not a de Polignac number, because 7896905 - 2² = 7896901 is a prime.

It is a super-2 number, since 2×7896905² = 124722217158050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7896901) 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, 789686 + ... + 789695.

It is an arithmetic number, because the mean of its divisors is an integer number (2369073).

Almost surely, 2^7896905 is an apocalyptic number.

It is an amenable number.

7896905 is a deficient number, since it is larger than the sum of its proper divisors (1579387).

7896905 is a wasteful number, since it uses less digits than its factorization.

7896905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579386.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 7896905 is about 2810.1432347836. The cubic root of 7896905 is about 199.1371578705.

The spelling of 7896905 in words is "seven million, eight hundred ninety-six thousand, nine hundred five".