16320697 has 6 divisors (see below), whose sum is σ = 17337518. Its totient is φ = 15360384.

The previous prime is 16320653. The next prime is 16320719. The reversal of 16320697 is 79602361.

16320697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 8317456 + 8003241 = 2884^2 + 2829^2 .

It is not a de Polignac number, because 16320697 - 2⁷ = 16320569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16320637) 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, 27948 + ... + 28525.

Almost surely, 2^16320697 is an apocalyptic number.

16320697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16320697 is a deficient number, since it is larger than the sum of its proper divisors (1016821).

16320697 is an equidigital number, since it uses as much as digits as its factorization.

16320697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56507 (or 56490 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 16320697 is about 4039.8882410285. Note that the first 3 decimals coincide. The cubic root of 16320697 is about 253.6566391967.

The spelling of 16320697 in words is "sixteen million, three hundred twenty thousand, six hundred ninety-seven".