6778402 has 16 divisors (see below), whose sum is σ = 11073600. Its totient is φ = 3099600.

The previous prime is 6778397. The next prime is 6778403. The reversal of 6778402 is 2048776.

It is a super-4 number, since 4×6778402⁴ (a number of 28 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (6778403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1974 + ... + 4177.

It is an arithmetic number, because the mean of its divisors is an integer number (692100).

Almost surely, 2^6778402 is an apocalyptic number.

6778402 is a deficient number, since it is larger than the sum of its proper divisors (4295198).

6778402 is a wasteful number, since it uses less digits than its factorization.

6778402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 6778402 is about 2603.5364410739. The cubic root of 6778402 is about 189.2528552974.

The spelling of 6778402 in words is "six million, seven hundred seventy-eight thousand, four hundred two".