16997629 has 4 divisors (see below), whose sum is σ = 18542880. Its totient is φ = 15452380.

The previous prime is 16997627. The next prime is 16997633. The reversal of 16997629 is 92679961.

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 16997629 - 2¹ = 16997627 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 (16997623) 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, 772609 + ... + 772630.

It is an arithmetic number, because the mean of its divisors is an integer number (4635720).

Almost surely, 2^16997629 is an apocalyptic number.

It is an amenable number.

16997629 is a deficient number, since it is larger than the sum of its proper divisors (1545251).

16997629 is a wasteful number, since it uses less digits than its factorization.

16997629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545250.

The product of its digits is 367416, while the sum is 49.

The square root of 16997629 is about 4122.8180896081. The cubic root of 16997629 is about 257.1162045715.

The spelling of 16997629 in words is "sixteen million, nine hundred ninety-seven thousand, six hundred twenty-nine".