6978901 has 2 divisors, whose sum is σ = 6978902. Its totient is φ = 6978900.

The previous prime is 6978883. The next prime is 6978911. The reversal of 6978901 is 1098796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6916900 + 62001 = 2630^2 + 249^2 .

It is a cyclic number.

It is not a de Polignac number, because 6978901 - 2⁵ = 6978869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6978911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3489450 + 3489451.

It is an arithmetic number, because the mean of its divisors is an integer number (3489451).

Almost surely, 2^6978901 is an apocalyptic number.

It is an amenable number.

6978901 is a deficient number, since it is larger than the sum of its proper divisors (1).

6978901 is an equidigital number, since it uses as much as digits as its factorization.

6978901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 6978901 is about 2641.7609657196. The cubic root of 6978901 is about 191.1007299236.

The spelling of 6978901 in words is "six million, nine hundred seventy-eight thousand, nine hundred one".