6985491 has 16 divisors (see below), whose sum is σ = 10056960. Its totient is φ = 4299680.

The previous prime is 6985481. The next prime is 6985499. The reversal of 6985491 is 1945896.

6985491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6985491 - 2⁶ = 6985427 is a prime.

It is a super-2 number, since 2×6985491² = 97594169022162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6985499) 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, 256 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (628560).

Almost surely, 2^6985491 is an apocalyptic number.

6985491 is a deficient number, since it is larger than the sum of its proper divisors (3071469).

6985491 is a wasteful number, since it uses less digits than its factorization.

6985491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546.

The product of its digits is 77760, while the sum is 42.

The square root of 6985491 is about 2643.0079455045. The cubic root of 6985491 is about 191.1608615320.

Subtracting from 6985491 its sum of digits (42), we obtain a square (6985449 = 2643²).

The spelling of 6985491 in words is "six million, nine hundred eighty-five thousand, four hundred ninety-one".