6991402 has 32 divisors (see below), whose sum is σ = 12265344. Its totient is φ = 2956800.

The previous prime is 6991381. The next prime is 6991417. The reversal of 6991402 is 2041996.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20578 + ... + 20914.

It is an arithmetic number, because the mean of its divisors is an integer number (383292).

Almost surely, 2^6991402 is an apocalyptic number.

6991402 is a deficient number, since it is larger than the sum of its proper divisors (5273942).

6991402 is a wasteful number, since it uses less digits than its factorization.

6991402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 6991402 is about 2644.1259425375. The cubic root of 6991402 is about 191.2147653204.

The spelling of 6991402 in words is "six million, nine hundred ninety-one thousand, four hundred two".