6900978 has 16 divisors (see below), whose sum is σ = 15773760. Its totient is φ = 1971696.

The previous prime is 6900977. The next prime is 6901007. The reversal of 6900978 is 8790096.

6900978 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6900973) 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, 82113 + ... + 82196.

It is an arithmetic number, because the mean of its divisors is an integer number (985860).

Almost surely, 2^6900978 is an apocalyptic number.

6900978 is an abundant number, since it is smaller than the sum of its proper divisors (8872782).

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

6900978 is a wasteful number, since it uses less digits than its factorization.

6900978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164321.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 6900978 is about 2626.9712598352. The cubic root of 6900978 is about 190.3868204339.

The spelling of 6900978 in words is "six million, nine hundred thousand, nine hundred seventy-eight".