16207397 has 4 divisors (see below), whose sum is σ = 16358976. Its totient is φ = 16055820.

The previous prime is 16207393. The next prime is 16207421. The reversal of 16207397 is 79370261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16207397 - 2² = 16207393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16207391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75629 + ... + 75842.

It is an arithmetic number, because the mean of its divisors is an integer number (4089744).

Almost surely, 2^16207397 is an apocalyptic number.

It is an amenable number.

16207397 is a deficient number, since it is larger than the sum of its proper divisors (151579).

16207397 is a wasteful number, since it uses less digits than its factorization.

16207397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151578.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 16207397 is about 4025.8411543428. The cubic root of 16207397 is about 253.0683052825.

The spelling of 16207397 in words is "sixteen million, two hundred seven thousand, three hundred ninety-seven".