997272205 has 8 divisors (see below), whose sum is σ = 1198482912. Its totient is φ = 796646928.

The previous prime is 997272197. The next prime is 997272223. The reversal of 997272205 is 502272799.

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

It is a cyclic number.

It is not a de Polignac number, because 997272205 - 2³ = 997272197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142599 + ... + 149428.

It is an arithmetic number, because the mean of its divisors is an integer number (149810364).

Almost surely, 2^997272205 is an apocalyptic number.

It is an amenable number.

997272205 is a deficient number, since it is larger than the sum of its proper divisors (201210707).

997272205 is a wasteful number, since it uses less digits than its factorization.

997272205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292715.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 997272205 is about 31579.6169229457. The cubic root of 997272205 is about 999.0899069820.

The spelling of 997272205 in words is "nine hundred ninety-seven million, two hundred seventy-two thousand, two hundred five".