6978069 has 40 divisors (see below), whose sum is σ = 12328448. Its totient is φ = 3849120.

The previous prime is 6978061. The next prime is 6978091. The reversal of 6978069 is 9608796.

It is not a de Polignac number, because 6978069 - 2³ = 6978061 is a prime.

It is a super-2 number, since 2×6978069² = 97386893937522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978061) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17379 + ... + 17775.

Almost surely, 2^6978069 is an apocalyptic number.

It is an amenable number.

6978069 is a deficient number, since it is larger than the sum of its proper divisors (5350379).

6978069 is a wasteful number, since it uses less digits than its factorization.

6978069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 6978069 is about 2641.6034903066. The cubic root of 6978069 is about 191.0931355031.

The spelling of 6978069 in words is "six million, nine hundred seventy-eight thousand, sixty-nine".