16626797 has 4 divisors (see below), whose sum is σ = 18138336. Its totient is φ = 15115260.

The previous prime is 16626781. The next prime is 16626803. The reversal of 16626797 is 79762661.

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 16626797 - 2⁴ = 16626781 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 (16626737) 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, 755753 + ... + 755774.

It is an arithmetic number, because the mean of its divisors is an integer number (4534584).

Almost surely, 2^16626797 is an apocalyptic number.

It is an amenable number.

16626797 is a deficient number, since it is larger than the sum of its proper divisors (1511539).

16626797 is a wasteful number, since it uses less digits than its factorization.

16626797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511538.

The product of its digits is 190512, while the sum is 44.

The square root of 16626797 is about 4077.5969638992. The cubic root of 16626797 is about 255.2326314884.

The spelling of 16626797 in words is "sixteen million, six hundred twenty-six thousand, seven hundred ninety-seven".