6778290 has 16 divisors (see below), whose sum is σ = 16267968. Its totient is φ = 1807536.

The previous prime is 6778283. The next prime is 6778297. The reversal of 6778290 is 928776.

It is an interprime number because it is at equal distance from previous prime (6778283) and next prime (6778297).

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6778297) 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, 112942 + ... + 113001.

It is an arithmetic number, because the mean of its divisors is an integer number (1016748).

Almost surely, 2^6778290 is an apocalyptic number.

6778290 is an abundant number, since it is smaller than the sum of its proper divisors (9489678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6778290 is a wasteful number, since it uses less digits than its factorization.

6778290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225953.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 6778290 is about 2603.5149317797. The cubic root of 6778290 is about 189.2518129457.

The spelling of 6778290 in words is "six million, seven hundred seventy-eight thousand, two hundred ninety".