16997407 has 8 divisors (see below), whose sum is σ = 19626656. Its totient is φ = 14418432.

The previous prime is 16997401. The next prime is 16997413. The reversal of 16997407 is 70479961.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16997401) and next prime (16997413).

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

It is not a de Polignac number, because 16997407 - 2²³ = 8608799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16997401) 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, 11838 + ... + 13195.

It is an arithmetic number, because the mean of its divisors is an integer number (2453332).

Almost surely, 2^16997407 is an apocalyptic number.

16997407 is a deficient number, since it is larger than the sum of its proper divisors (2629249).

16997407 is an equidigital number, since it uses as much as digits as its factorization.

16997407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25137.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 16997407 is about 4122.7911661883. The cubic root of 16997407 is about 257.1150851988.

The spelling of 16997407 in words is "sixteen million, nine hundred ninety-seven thousand, four hundred seven".