6985894037 has 4 divisors (see below), whose sum is σ = 6987644076. Its totient is φ = 6984144000.

The previous prime is 6985894009. The next prime is 6985894043. The reversal of 6985894037 is 7304985896.

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 3130850116 + 3855043921 = 55954^2 + 62089^2 .

It is a cyclic number.

It is not a de Polignac number, because 6985894037 - 2⁶ = 6985893973 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 (6985894537) 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, 869018 + ... + 877019.

It is an arithmetic number, because the mean of its divisors is an integer number (1746911019).

Almost surely, 2^6985894037 is an apocalyptic number.

It is an amenable number.

6985894037 is a deficient number, since it is larger than the sum of its proper divisors (1750039).

6985894037 is a wasteful number, since it uses less digits than its factorization.

6985894037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750038.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The square root of 6985894037 is about 83581.6608892166. The cubic root of 6985894037 is about 1911.6453788620.

The spelling of 6985894037 in words is "six billion, nine hundred eighty-five million, eight hundred ninety-four thousand, thirty-seven".