6991416 has 24 divisors (see below), whose sum is σ = 18935280. Its totient is φ = 2330448.

The previous prime is 6991381. The next prime is 6991417. The reversal of 6991416 is 6141996.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48480 + ... + 48623.

It is an arithmetic number, because the mean of its divisors is an integer number (788970).

Almost surely, 2^6991416 is an apocalyptic number.

It is an amenable number.

6991416 is an abundant number, since it is smaller than the sum of its proper divisors (11943864).

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

6991416 is a wasteful number, since it uses less digits than its factorization.

6991416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97115 (or 97108 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 6991416 is about 2644.1285899139. The cubic root of 6991416 is about 191.2148929536.

The spelling of 6991416 in words is "six million, nine hundred ninety-one thousand, four hundred sixteen".