165667422 has 16 divisors (see below), whose sum is σ = 348773760. Its totient is φ = 52315992.

The previous prime is 165667421. The next prime is 165667423. The reversal of 165667422 is 224766561.

It is an interprime number because it is at equal distance from previous prime (165667421) and next prime (165667423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165667421) 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, 726498 + ... + 726725.

It is an arithmetic number, because the mean of its divisors is an integer number (21798360).

Almost surely, 2^165667422 is an apocalyptic number.

165667422 is an abundant number, since it is smaller than the sum of its proper divisors (183106338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165667422 is a wasteful number, since it uses less digits than its factorization.

165667422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453247.

The product of its digits is 120960, while the sum is 39.

The square root of 165667422 is about 12871.1857262647. The cubic root of 165667422 is about 549.2191917736.

The spelling of 165667422 in words is "one hundred sixty-five million, six hundred sixty-seven thousand, four hundred twenty-two".