997629 has 8 divisors (see below), whose sum is σ = 1376160. Its totient is φ = 642096.

The previous prime is 997627. The next prime is 997637. The reversal of 997629 is 926799.

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

It is not a de Polignac number, because 997629 - 2¹ = 997627 is a prime.

997629 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997627) 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, 5647 + ... + 5820.

It is an arithmetic number, because the mean of its divisors is an integer number (172020).

2⁹⁹⁷⁶²⁹ is an apocalyptic number.

It is an amenable number.

997629 is a deficient number, since it is larger than the sum of its proper divisors (378531).

997629 is a wasteful number, since it uses less digits than its factorization.

997629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499.

The product of its digits is 61236, while the sum is 42.

The square root of 997629 is about 998.8137964606. The cubic root of 997629 is about 99.9209041216.

The spelling of 997629 in words is "nine hundred ninety-seven thousand, six hundred twenty-nine".