163740797 has 8 divisors (see below), whose sum is σ = 181997280. Its totient is φ = 146046160.

The previous prime is 163740767. The next prime is 163740817. The reversal of 163740797 is 797047361.

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 163740797 - 2⁸ = 163740541 is a prime.

It is a super-2 number, since 2×163740797² = 53622097204390418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163740767) 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, 139847 + ... + 141012.

It is an arithmetic number, because the mean of its divisors is an integer number (22749660).

Almost surely, 2^163740797 is an apocalyptic number.

It is an amenable number.

163740797 is a deficient number, since it is larger than the sum of its proper divisors (18256483).

163740797 is a wasteful number, since it uses less digits than its factorization.

163740797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280923.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 163740797 is about 12796.1242960515. The cubic root of 163740797 is about 547.0818413528.

The spelling of 163740797 in words is "one hundred sixty-three million, seven hundred forty thousand, seven hundred ninety-seven".