997166361 has 8 divisors (see below), whose sum is σ = 1346385280. Its totient is φ = 656362512.

The previous prime is 997166351. The next prime is 997166369. The reversal of 997166361 is 163661799.

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

It is not a de Polignac number, because 997166361 - 2²¹ = 995069209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 997166361.

It is not an unprimeable number, because it can be changed into a prime (997166369) 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, 2103490 + ... + 2103963.

It is an arithmetic number, because the mean of its divisors is an integer number (168298160).

Almost surely, 2^997166361 is an apocalyptic number.

It is an amenable number.

997166361 is a deficient number, since it is larger than the sum of its proper divisors (349218919).

997166361 is a wasteful number, since it uses less digits than its factorization.

997166361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207535.

The product of its digits is 367416, while the sum is 48.

The square root of 997166361 is about 31577.9410506765. The cubic root of 997166361 is about 999.0545600917.

The spelling of 997166361 in words is "nine hundred ninety-seven million, one hundred sixty-six thousand, three hundred sixty-one".