6904861 has 4 divisors (see below), whose sum is σ = 6910272. Its totient is φ = 6899452.

The previous prime is 6904831. The next prime is 6904883. The reversal of 6904861 is 1684096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6904861 - 2¹¹ = 6902813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6904801) 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, 390 + ... + 3736.

It is an arithmetic number, because the mean of its divisors is an integer number (1727568).

Almost surely, 2^6904861 is an apocalyptic number.

It is an amenable number.

6904861 is a deficient number, since it is larger than the sum of its proper divisors (5411).

6904861 is a wasteful number, since it uses less digits than its factorization.

6904861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 6904861 is about 2627.7102199444. The cubic root of 6904861 is about 190.4225223016.

The spelling of 6904861 in words is "six million, nine hundred four thousand, eight hundred sixty-one".