6915138 has 8 divisors (see below), whose sum is σ = 13830288. Its totient is φ = 2305044.

The previous prime is 6915127. The next prime is 6915149. The reversal of 6915138 is 8315196.

It is an interprime number because it is at equal distance from previous prime (6915127) and next prime (6915149).

It is a sphenic number, since it is the product of 3 distinct primes.

6915138 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6915099 and 6915108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576256 + ... + 576267.

It is an arithmetic number, because the mean of its divisors is an integer number (1728786).

Almost surely, 2^6915138 is an apocalyptic number.

6915138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6915138 is a wasteful number, since it uses less digits than its factorization.

6915138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152528.

The product of its digits is 6480, while the sum is 33.

The square root of 6915138 is about 2629.6649976756. The cubic root of 6915138 is about 190.5169486371.

The spelling of 6915138 in words is "six million, nine hundred fifteen thousand, one hundred thirty-eight".